Books in Biology (sorted by popularity)
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- On the Origin of Species By Means of Natural Selection Charles Darwin 3160 downloads
- Form and Function: A Contribution to the History of Animal Morphology E. S. Russell 2839 downloads
- The Origin of Species by Means of Natural Selection Charles Darwin 1210 downloads
- Darwinism (1889) Alfred Russel Wallace 1140 downloads
- On the Origin of Species by Means of Natural Selection Charles Darwin 804 downloads
- Explanation of Terms Used in Entomology John Bernhard Smith 463 downloads
- The Foundations of the Origin of Species Charles Darwin 459 downloads
- Our Vanishing Wild Life: Its Extermination and Preservation William T. Hornaday 401 downloads
- An Elementary Study of Insects Leonard Haseman 325 downloads
- Social Life in the Insect World Jean-Henri Fabre 272 downloads
- On the Origin of Species by Means of Natural Selection Charles Darwin 271 downloads
- Zoonomia; Or, the Laws of Organic Life, Vol. I Erasmus Darwin 240 downloads
- The History of Insects Unknown 239 downloads
- On the Origin of Species Charles Darwin 238 downloads
- Birds of the Indian Hills Douglas Dewar 229 downloads
- The Life-Story of Insects George H. Carpenter 218 downloads
- Our Common Insects A. S. Packard 217 downloads
- The Dawn of Reason; or, Mental Traits in the Lower Animals Jr. James Weir 181 downloads
- Wild Nature Won By Kindness Mrs. Brightwen 180 downloads
- What is Darwinism? Charles Hodge 154 downloads
- The Variation of Animals and Plants under Domestication Charles Darwin 150 downloads
- The Wonders of Instinct: Chapters in the Psychology of Insects Jean-Henri Fabre 146 downloads
- The Human Side of Animals Royal Dixon 144 downloads
- On the Genesis of Species St. George Jackson Mivart 142 downloads
- Development of the Digestive Canal of the American Alligator A. M. Reese 137 downloads
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