Material Types:

Image (499,363)Open Access Book (159,872)Primary Source (118,708)Public Domain Book (87,116)Map (21,198)Interactive Simulation (12,811)Audiobook (12,625)Video (8,401)Course Material (5,582)Course (4,832)Lesson Plan (4,357)Case (4,072)Textbook (3,320)Learning Object (2,369)Podcast (468)Casebook (257)Module (172)

Sources:

J. Paul Getty Museum (147,238)Library of Congress (118,735)Library of Congress - Images (111,258)Project Gutenberg (86,809)Oxford Text Archive (63,953)National Gallery of Art (52,342)Yale Center for British Art (50,278)Tate Modern (44,742)Art Institute of Chicago (42,080)Directory of Open Access Books (36,469)Los Angeles County Museum of Art (25,005)Library of Congress - Maps (21,198)Arabic Collections Online (14,688)OAPEN (13,801)Morgan Library and Museum (13,041)Librivox (12,625)Open Research Library (12,551)Wolfram Demonstrations (12,460)World Digital Library - Images (9,491)JSTOR Open Access Books (6,709)TED Talks (4,820)CTE ONLINE (4,357)H2O - Harvard University Law Cases (4,072)Project Muse Open Access Books (3,714)MIT OpenCourseWare (3,273)National Portrait Gallery (2,745)Phet - Activities (2,513)Open Knowledge Repository (2,503)Wisc-Online (2,369)TEDEd (2,276)World Digital Library - Books (2,195)FreeTechBooks (1,214)QUBES (1,142)CUNY Academic Works (884)Open Textbook Library (847)Dickinson College Commentaries - Images (772)iBiology (635)MetPublications (596)eCampus Ontario (582)BioInteractive (500)Teaching Commons - Textbooks (471)Library of Congress - Videos (441)University of Oxford Podcasts (388)Public Domain Review - Images (371)BC Campus (333)Public Domain Review - Books (307)LibreTexts - Courses (279)TU Delft OpenCourseWare (263)H2O - Harvard University Law Casebooks (257)University of Michigan Press (226)Getty Publications Virtual Library (220)Teaching Commons - Course Materials (196)LearnChemE (193)CORA - Community of Online Research Assignments (178)Achieving the Dream Courses (167)Phet - Interactive Simulations (158)MIT Press Open (157)Astronomy Education at UNL - Course Materials (151)Cornell Open (150)Public Domain Review - Films (140)John Hopkins Bloomberg School of Public Health (121)SUNY OER Catalog (116)Open Access Texts (115)LibreTexts (112)Noba (106)UCI Open (98)Saylor Academy (96)OPEN.ED @PSU (82)Open Course Library (81)Center for Computer-Assisted Legal Instruction - Podcasts (80)Penn State University Press (76)GALILEO Open Learning Materials (75)Open Michigan (72)NYU Press (71)Astronomy Education at UNL - Modules (66)Humanities Digital Library (66)American Institute of Mathematics (65)Center for Computer-Assisated Legal Instruction (63)ACLS Humanities E-Book (60)WayneOPEN (58)Purdue University Press (52)Washington University in St. Louis (51)UMass Boston OpenCourseWare (50)Brown University (50)OpenStax (50)Open Oregon (47)Northwestern Open (46)College of the Canyons (46)Whatcom Community College (42)E-International Relations (41)Open Yale Courses (40)Teaching Commons - Courses (40)Oregon State University (33)World Digital Library - Videos (32)Temple University Press (31)The Mind of the Universe: Open Source Science TV (30)Portland State University (29)Open SUNY Textbooks (26)Grand Valley State University (25)Ohio State University (25)Kwantlen Polytehnic University (23)Ryerson University (23)Boundless Courses (22)Syracuse Open (20)Rebus Community (19)University of North Dakota (19)LibreTexts - Course Materials (18)Granite State College (18)Oklahoma State University (18)Open Education Alberta (18)University of Kentucky (18)University of Saskatchewan (18)New Prairie Press - Kansas State University (17)Dickinson College Commentaries (16)Wesleyan University Press (16)University of Wisconsin - Madison (16)Penn State University (13)University of Texas at Arlington (13)Smarthistory (12)University of South Florida (12)University of Washington (12)Cleveland State University (11)Indiana University (10)TU Delft (10)Stanford Engineering Everywhere (9)Amherst College Press (9)Boise State University (9)University of Hawaii (9)University of Minnesota (9)Plymouth State University (8)University of Central Florida (8)College of DuPage (7)York University (7)Gettysburg College (6)University of Houston (6)Muhlenberg College (5)University of Arkansas (5)University of Massachusetts Amherst (5)Iowa State University (4)Pacific University Press (4)Trinity University (4)University of California, Berkeley (4)University of Southern Queensland (4)Virginia Commonwealth University (4)George Fox University (3)Michigan State University (2)Salt Lake Community College (2)Eastern Kentucky University (1)Ferris State University (1)Keene State University (1)Virginia Western Community College (1)Washington State University (1)

Subjects:

Law (5,761)Religion (5,034)History (4,768)Literature (4,180)Physics (1,539)Mathematics (968)Political (959)Sociology (897)Art and Art History (849)Medical and Health Sciences (845)Education (792)Social Sciences (756)Science & Technology (732)Language (714)Chemistry (680)Science, Technology, Engineering & Mathematics (534)Political Science (469)Biology (462)Philosophy (442)Psychology (424)Anthropology (381)Economics (379)Business (357)Electronics (321)Languages and Linguistics (310)Social Studies (295)Electrical Engineering and Computer Science (258)Astronomy (252)Management (248)Chemical Engineering (243)Health (222)Library and Information Science (215)Industrial Automation (211)Architecture (206)Technology (206)Manufacturing (193)Urban Studies and Planning (193)Design, Engineering & Technology (169)Science (155)Mechanical Engineering (154)Comparative Media Studies/Writing (147)Business, (126)General Works (114)Earth Sciences (108)Biochemistry (108)Civil and Environmental Engineering (108)Earth, Atmospheric, and Planetary Sciences (107)Art (99)Archaeology (98)Anatomy and Physiology (97)Computer Science (95)Brain and Cognitive Sciences (94)Geography. Anthropology. Recreation (89)Aeronautics and Astronautics (88)Machine Tool (87)Thinking & Learning (84)Earth and Mineral Sciences (82)Music (80)Ecology (74)Film and Media Studies (74)Music and Theater Arts (71)Communication (70)Engineering Systems (67)Engineering (66)International Relations (66)Science, Technology, and Society (66)Film (66)Agriculture (65)Linguistics (61)Materials Science and Engineering (60)Women's and Gender Studies (59)Information Technology (58)Evolution (58)Public (56)Humanities (51)Nuclear Science and Engineering (49)Media Arts and Sciences (48)Policy Studies (46)IT Networking (45)Fine Arts (44)Animal Sciences (43)Languages (43)Other (42)Physical Sciences (42)Finance (42)Multidisciplinary (40)Population (35)Geography (34)Music and Books on Music (34)Welding (34)Science, Technology, and Mathematics (33)Labor Studies (32)Computer Programming (32)Communication studies (31)English (30)General (30)Experimental Study Group (30)Creative Writing (29)Politics (29)Fiction (28)Theater and Performance Studies (28)Poetry (28)Ancient and Classical (26)Web Development (26)Edgerton Center (26)Cultural Studies (25)Information (24)Women's Studies (24)Environmental Science (24)People (24)Law, Public Safety, Corrections & Security (23)Feminist (23)IT Security (22)Jewish Studies (22)Transportation (22)Transportation, Distribution & Logistics (21)Ghosts & Occult (21)Environmental (20)Performing (20)Media Studies and Communications (20)Criminology (19)Data, Systems, and Society (19)International (19)Misc. (18)Gender (17)Student Success (17)Classical Studies (16)Labor (16)Space & The Future (15)Biological (15)Demography (15)Democracy and Human Rights (14)Career Skills (14)Travel & Exploration (14)Political Theory (14)Library (14)Film, Theater, and Performing Arts (14)Race and Ethnicity (12)Writing & editing guides (12)Environmental, Earth, and Ocean Sciences (12)Geosciences (12)Design & Typography (12)Natural Sciences (12)Rhetoric, Composition, and Writing (12)IT Database (11)Wisdom (11)Urban Sociology (11)Dance (10)Workforce (10)Customs & Culture (10)Humour & Satire (10)Natural World (10)Novelty (10)Development (10)Peace (10)Number Systems (9)Death (9)Folklore (9)African American and African Diaspora Studies (9)Communications (8)Geology (8)IT Support (8)American Studies (8)Stories (8)Cultural (8)Pragmatism (8)Accounting (7)Human Services (7)Trigonometry (7)Social Ecology (7)The 'Other' (7)Bibliography (7)Museum Studies (7)Liberal Studies (7)Gender Studies (6)Military Science (6)Public Health Resources (6)Foundational IT Skills (6)Marketing (6)Science Practices (6)Comparative Politics (6)Gender & Women’s Studies (6)Public Health (6)Translation Studies (6)Drama (5)Social work (5)Concourse (5)Sport (5)Computer (5)Latin American and Caribbean Studies (5)Urban (5)Area and Ethnic Studies (4)LGBT Studies (4)Nursing Resources (4)Public Policy Resources (4)Interpersonal communication & skills (4)Microeconomics (4)Theatre studies (4)Veterinary Medicine (4)Crime (4)Love (4)Strange Phenomena (4)Literary Studies (4)Botany (4)Landscape Architecture (4)Deaf and Disability Studies (4)Native American and Indigenous Studies (4)Statistics (4)Medieval and Renaissance Studies (4)Media Studies (4)Social (4)ES (3)Arts, Audio/Video Technology & Communications (3)African American Studies (3)Electrical engineering (3)Environmental Studies (3)Politics & government (3)Research methods: general (3)Fashion (3)Sex (3)Zoology (3)Garden (3)Methodology (3)Photography (3)Social Aspects (3)Korea (3)Web programming (3)Publishing & book trade (3)Naval Science (2)Sociology of Religion (2)Nursing (2)Study & learning skills: general (2)Israeli Studies, Jewish Studies (2)Usage & grammar guides (2)Web graphics & design (2)Computational biology / bioinformatics (2)Critical and Creative Thinking (2)Physics: Fluid mechanics (2)Landscapes (2)Maps (2)Military (2)Latin (2)Canadian Studies (2)American (2)Ancient Studies and Classics (2)Local and Regional (2)Aquatic (2)Middle Eastern Studies (2)Paleontology (2)German Studies (2)Children's Studies (2)Book History and Print Culture (2)Design (2)Gender studies: women & girls (2)Public health & preventive medicine (2)Public finance accounting (2)Physics Resources (1)Medicine & Nursing (1)Tema principal Guías gramaticales y de uso (1)Careers guidance (1)Co (1)College Success (1)Engineering graphics & draughting / technical drawing (1)Forests & woodland (1)GE (1)Information retrieval & access (1)Literacy (1)Metals technology / metallurgy (1)Microsoft programming (1)Nursing specialties (1)Oceanography (1)Other manufacturing technologies (1)Public relations (1)Security, safety & protection skills / professions (1)Spreadsheet software (1)Cultural Studies, Detroit (1)Earthquake engineering (1)Folklore, Israeli Studies, Jewish Studies (1)Folklore, Jewish Studies (1)Folklore, Maritime Studies (1)Government & Public Administration (1)Great Lakes, Maritime Studies (1)Great Lakes, Maritime Studies, Michigan (1)Hospitality & Tourism (1)Hydraulics / Pneumatics (1)International law, transport & commerce: maritime law (1)Israeli Studies, Music (1)Literary studies: plays & playwrights (1)Michigan, Upper Peninsula (1)Translation & interpretation (1)Gay & Lesbian studies / LGBTQ studies (1)Law: wills, probate, succession (1)Classics (1)Critical Reading and Writing (1)First Year and Intermediate Seminar (1)Geology and Geophysics (1)Graphical & digital media applications (1)Labs & Demos (1)Performing Arts (1)Public Policy (1)Regional, state & other local government (1)Systems analysis & design (1)Electric motors (1)Legal aspects of criminology (1)Drugs (1)Emotion and Expression (1)Food (1)Plays, playscripts (1)Work (1)Rural Sociology (1)Biographies and Memoirs (1)Statistics, (1)Native American Literature (1)French Studies (1)Children's Literature (1)Asian and Pacific Studies (1)Publishing (1)African (1)Astronomy, (1)Gerontology (1)Journalism (1)Bioethics (1)Food Studies (1)Archeology (1)Gender & Sexuality Studies (1)Information theory (1)Science: general issues (1)Insects (entomology) (1)User interface design & usability (1)Engineering: general (1)Peace studies & conflict resolution (1)Engineering thermodynamics (1)Human trafficking (1)Forestry industry (1)Cultural & media studies (1)Media studies: journalism (1)Tema principal Literatura comparada (1)Regional studies (1)Secretarial, clerical & office skills (1)Computer security (1)News media & journalism (1)Soil science & management (1)Building construction & materials (1)Production & industrial engineering (1)Management decision making (1)Film and TV (1)Primary Subject (1)General cookery & recipes (1)Performance art (1)Urban Studies (1)Films, cinema (1)Climate change (1)Social geography (1)Freedom of information law (1)Management: leadership & motivation (1)Information Management (1)Sales & marketing (1)Primary Subject Psychology (1)Media, entertainment, information & communication industries (1)Ancient, classical & medieval texts (1)Speculative fiction (1)Commercial law (1)Desktop publishing (1)

Usage Rights:

Public Domain (616,522)Attribution-NonCommercial-NoDerivs (73,604)Attribution-ShareAlike (66,127)Open Access (52,342)Attribution-NonCommercial-ShareAlike (29,632)Attribution (12,534)Attribution-NonCommercial (6,055)CC0 (2,745)Attribution-NoDerivs (867)ANU Press (568)All Rights Reserved (21)University of Adelaide Press (21)Attribution-ShareAlike (16)Firenze University Press (12)Free Documentation License (GNU) (11)No Rights Reserved (3)Atribución NoComercial CompartirIgual (1)Atribución (1)

Languages:

English (22,478)Arabic (14,700)German (9,753)French (7,573)Portuguese (2,253)Spanish (2,052)Italian (974)Dutch (769)Norwegian (140)Russian (101)Finnish (84)Danish (63)Catalan (52)Swedish (39)Lithuanian (23)Slovenian (20)Latin (16)Afrikaans (15)Chinese (12)Czech (12)Greek (10)Polish (8)Bulgarian (7)Turkish (7)Albanian (6)Welsh (4)Tamil (4)Croatian (4)Hindi (4)Japanese (3)Ancient Greek (3)Slovak (2)Kinyarwanda (2)En (2)Hebrew (1)Ladino (1)Ukrainian (1)Chechen (1)

945,523 results found

Open Access Book
Open Access Book image
Integridade ambiental da represa de Jurumirim : ictiofauna e relações ecológicas
Author: Reinaldo José da Silva
Source: Directory of Open Access Books
Usage Rights:
Publication Date: 2016
View Open Access Book
Share
Open Access Book
Open Access Book image
Inspektionsreisen in der US-Zone. Notizen, Denkschriften und Erinnerungen aus dem Nachlaß
Author: Dorn, Walter L.Niethammer, Lutz
Source: Directory of Open Access Books
Usage Rights:
Publication Date: 1973
View Open Access Book
Share
Open Access Book
Open Access Book image
Intelectuales, Estado y Nación en Colombia
Author: Miguel Ángel Urrego Ardila
Source: Directory of Open Access Books
Publication Date: 2002
View Open Access Book
Share
Open Access Book
Open Access Book image
Integrating Ecohydraulics in River Restoration: Advances in Science and Applications
Author: Boavida, Isabel, Santos, José Maria
Source: Directory of Open Access Books
Usage Rights:
Publication Date: 2020
View Open Access Book
Share
Open Access Book
Open Access Book image
La insurrección de la vulnerabilidad: para una pedagogía de los cuidados y la resistencia
Author: Asun Pié Balaguer
Source: Directory of Open Access Books
Usage Rights:
Publication Date: 2020
View Open Access Book
Share
Open Access Book
Open Access Book image
Integrierte Standort-, Kapazitäts- und Technologieplanung von Wertschöpfungsnetzwerken zur stofflichen und energetischen Biomassenutzung
Author: Schwaderer, Frank
Source: Directory of Open Access Books
Usage Rights:
Publication Date: 2012
View Open Access Book
Share
Open Access Book
Open Access Book image
Insecticides - Advances in Integrated Pest Management
Author: Farzana Perveen
Source: Directory of Open Access Books
Publication Date: 2012
View Open Access Book
Share
Open Access Book
Open Access Book image
Integrated Pest Management and Pest Control - Current and Future Tactics
Author: Sonia Soloneski, Marcelo L. Larramendy
Source: Directory of Open Access Books
Publication Date: 2012
View Open Access Book
Share
Open Access Book
Open Access Book image
Insecticides Resistance
Author: Stanislav Trdan
Source: Directory of Open Access Books
Publication Date: 2016
View Open Access Book
Share
Open Access Book
Open Access Book image
Institutions coloniales et réalités sociales en Amérique espagnole
Author: Marie-Cécile Bénassy, André Saint-Lu (dir.)
Source: Directory of Open Access Books
Publication Date: 1988
View Open Access Book
Share
Open Access Book
Open Access Book image
Die Inschriften zu den Ludi saeculares. Acta ludorum saecularium
Author: Schnegg, Bärbel
Source: Directory of Open Access Books
Usage Rights:
Publication Date: 2020
View Open Access Book
Share
Open Access Book
Open Access Book image
Intelligent Sensing Technologies for Nondestructive Evaluation
Author: Pedro Manuel Brito da Silva Girão (Ed.), Octavian Postolache (Ed.), Aimé Lay-Ekuakille (Ed.), Seunghee Park (Ed.)
Source: Directory of Open Access Books
Usage Rights:
Publication Date: 2018
View Open Access Book
Share
Open Access Book
Open Access Book image
Interlacing Self-Localization, Moving Object Tracking and Mapping for 3D Range Sensors
Author: Moosmann, Frank
Source: Directory of Open Access Books
Usage Rights:
Publication Date: 2013
View Open Access Book
Share
Open Access Book
Open Access Book image
L'intermédiation en question
Author: Christine Zumello
Source: Directory of Open Access Books
Publication Date: 2011
View Open Access Book
Share
Open Access Book
Open Access Book image
Intelligentes Gesamtmaschinenmanagement für elektrische Antriebssysteme
Author: Pohlandt, Christian
Source: Directory of Open Access Books
Usage Rights:
Publication Date: 2018
View Open Access Book
Share
Open Access Book
Open Access Book image
Intermetallic Compounds - Formation and Applications
Author: Mahmood Aliofkhazraei
Source: Directory of Open Access Books
Publication Date: 2018
View Open Access Book
Share
Open Access Book
Open Access Book image
Les intellectuels catholiques dans la société française
Author: Claire Toupin-Guyot
Source: Directory of Open Access Books
Publication Date: 2002
View Open Access Book
Share
Open Access Book
Open Access Book image
Intelligent Imaging and Analysis
Author: Hwang, Dosik, Kim, DaeEun
Source: Directory of Open Access Books
Usage Rights:
Publication Date: 2020
View Open Access Book
Share
Open Access Book
Open Access Book image
Intermittency and Self-Organisation in Turbulence and Statistical Mechanics
Author: Kim, Eun-jin
Source: Directory of Open Access Books
Usage Rights:
Publication Date: 2019
View Open Access Book
Share
Open Access Book
Open Access Book image
Interface Circuits for Microsensor Integrated Systems
Author: Giuseppe Ferri (Ed.), Vincenzo Stornelli (Ed.)
Source: Directory of Open Access Books
Usage Rights:
Publication Date: 2018
View Open Access Book
Share
Open Access Book
Open Access Book image
Intelligent Human Computer Interaction: 9th International Conference, IHCI 2017, Evry, France, December 11-13, 2017, Proceedings
Author: Catherine Achard, Malik Mallem, Patrick Horain
Source: Directory of Open Access Books
Usage Rights:
Publication Date: 2017
View Open Access Book
Share
Open Access Book
Open Access Book image
Interaktive 3D-Modellerfassung mittels One-Shot-Musterprojektion und Schneller Registrierung
Author: Gockel, Tilo
Source: Directory of Open Access Books
Usage Rights:
Publication Date: 2006
View Open Access Book
Share
Open Access Book
Open Access Book image
Intelligent System
Author: Chatchawal Wongchoosuk
Source: Directory of Open Access Books
Publication Date: 2018
View Open Access Book
Share
Open Access Book
Open Access Book image
Interdisciplining Digital Humanities
Author: Julie Thompson Klein
Source: Directory of Open Access Books
Usage Rights:
Publication Date: 2014
View Open Access Book
Share
Open Access Book
Open Access Book image
Interactions dans le groupe et apprentissages
Author: Catherine Le Cunff, Marie-Anne Hugon (dir.)
Source: Directory of Open Access Books
Publication Date: 2011
View Open Access Book
Share
Start of page image
pages image 4183
pages image 4184
pages image 4185
pages image 4186
pages image 4187
selected page page image 4188
pages image 4189
pages image 4190
pages image 4191
pages image 4192
End of page image