Books in Biology (sorted by popularity)
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- On the Origin of Species By Means of Natural Selection Charles Darwin 3467 downloads
- Form and Function: A Contribution to the History of Animal Morphology E. S. Russell 2864 downloads
- The Origin of Species by Means of Natural Selection Charles Darwin 1362 downloads
- Darwinism (1889) Alfred Russel Wallace 1151 downloads
- On the Origin of Species by Means of Natural Selection Charles Darwin 849 downloads
- Zoonomia; Or, the Laws of Organic Life, Vol. I Erasmus Darwin 526 downloads
- Explanation of Terms Used in Entomology John Bernhard Smith 507 downloads
- The Foundations of the Origin of Species Charles Darwin 499 downloads
- Our Vanishing Wild Life: Its Extermination and Preservation William T. Hornaday 424 downloads
- An Elementary Study of Insects Leonard Haseman 353 downloads
- On the Origin of Species by Means of Natural Selection Charles Darwin 307 downloads
- Social Life in the Insect World Jean-Henri Fabre 306 downloads
- Birds of the Indian Hills Douglas Dewar 266 downloads
- The History of Insects Unknown 257 downloads
- Our Common Insects A. S. Packard 250 downloads
- On the Origin of Species Charles Darwin 240 downloads
- The Life-Story of Insects George H. Carpenter 236 downloads
- Wild Nature Won By Kindness Mrs. Brightwen 202 downloads
- The Dawn of Reason; or, Mental Traits in the Lower Animals Jr. James Weir 201 downloads
- Fathers of Biology Charles McRae 199 downloads
- What is Darwinism? Charles Hodge 168 downloads
- Evolution in Modern Thought 166 downloads
- The Variation of Animals and Plants under Domestication Charles Darwin 159 downloads
- The Wonders of Instinct: Chapters in the Psychology of Insects Jean-Henri Fabre 158 downloads
- On the Genesis of Species St. George Jackson Mivart 150 downloads
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