Books in Biology (sorted by popularity)
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- On the Origin of Species By Means of Natural Selection Charles Darwin 3550 downloads
- The Variation of Animals and Plants under Domestication Charles Darwin 3035 downloads
- The Origin of Species by Means of Natural Selection Charles Darwin 1379 downloads
- On the Origin of Species by Means of Natural Selection Charles Darwin 1186 downloads
- Zoonomia; Or, the Laws of Organic Life, Vol. I Erasmus Darwin 539 downloads
- Contributions to the Theory of Natural Selection Alfred Russel Wallace 499 downloads
- Explanation of Terms Used in Entomology John Bernhard Smith 416 downloads
- The Foundations of the Origin of Species Charles Darwin 397 downloads
- Social Life in the Insect World Jean-Henri Fabre 349 downloads
- An Elementary Study of Insects Leonard Haseman 349 downloads
- Our Vanishing Wild Life: Its Extermination and Preservation William T. Hornaday 337 downloads
- On the Origin of Species by Means of Natural Selection Charles Darwin 319 downloads
- On the Origin of Species Charles Darwin 269 downloads
- Our Common Insects A. S. Packard 262 downloads
- Birds of the Indian Hills Douglas Dewar 257 downloads
- The History of Insects Unknown 253 downloads
- The Dawn of Reason; or, Mental Traits in the Lower Animals Jr. James Weir 236 downloads
- Fathers of Biology Charles McRae 206 downloads
- Wild Nature Won By Kindness Mrs. Brightwen 202 downloads
- What is Darwinism? Charles Hodge 189 downloads
- Birds in Town & Village W. H. Hudson 186 downloads
- The Wonders of Instinct: Chapters in the Psychology of Insects Jean-Henri Fabre 179 downloads
- Evolution in Modern Thought 179 downloads
- Darwinism (1889) Alfred Russel Wallace 165 downloads
- On the Genesis of Species St. George Jackson Mivart 164 downloads
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