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Textbooks by Subject

Science

 

Anatomy and Physiology of Animals by Wikibooks (CC-BY-SA)
AP Environmental Science by University of California College Prep (CC-BY)
Comparing Stars by OpenLearn (CC-BY-NC-SA)
Deserts: Geology and Resources by Walker (PD)
Earth’s Physical Resources: Petroleum by OpenLearn (CC-BY-NC-SA)
Earthquakes by OpenLearn (CC-BY-NC-SA)
bullet-3 Essentials of Environmental Science by Dorsner (CC-BY-NC)
Evolution through Natural Selection by OpenLearn (CC-BY-NC-SA)
Gene Manipulation in Plants by OpenLearn (CC-BY-NC-SA)
Genes, Technology and Policy/The Science by Wikibooks (CC-BY-SA)
Geothermal Energy—Clean Power From the Earth’s Heat by Duffield and Sass (PD)
GIS Commons: An Introductory Textbook on Geographic Information Systems by Schmandt (CC-BY-SA)
bullet-3 Introduction to Ocean Science by Segar (CC-BY-NC-ND) 
An Introduction to Sustainable Energy by OpenLearn (CC-BY-NC-SA)
Life in the Palaeozoic by OpenLearn (CC-BY-SA)
Nature of Geographic Information by Sloan, et al. (CC-BY-NC-SA)
The Opensource Handbook of Nanoscience and Nanotechnology by Wikibooks (CC-BY-SA)
Physical Geography by Lenkeit (CC-BY-NC)
Plate Tectonics by OpenLearn (CC-BY-NC-SA)
  Science Appreciation: Introduction to Science Literacy by White and Dennin (Custom)
bullet-3 NIH Curriculum Supplement Series by National Institutes of Health (PD)
Sustainability: A Comprehensive Foundation ed. by Theis and Tomkin (CC-BY)
This Dynamic Earth: The Story of Plate Tectonics by Kious and Tilling (PD) [Accessibility]

 

Disclaimer: College Open Textbook has not yet vetted all of the open textbooks on this list for quality or accuracy of the content. However, peer reviews, as indicated by an asterisk (*) next to the book title, are available at The Reviews: Science.
Accessibility reviews, as indicated by the number 1 next to the book title, are available at Accessibility reviews.
License Attributes: ACARR=Affordable Copyright All Rights Reserved.  BY=Open w/ Attribution.  CC=Creative Commons license.  GFDL=GNU Free Documentation License.  GGPL=GNU General Public License.  NC=Non-Commercial.  ND=No Derivative Works.  PD=Public Domain.  SA=Share Alike.