The Origin of Species Mass Market Paperback – April 1, 1958 by Charles Darwin 
 
One of the most famous and influential books of its (or any) time, The Origin of Species is, surprisingly, little read. True enough, most people know what it says---or think they do, at any rate. The first comprehensive statement of the theory of natural selection it does, indeed, provide the basic argument and demonstration of what we think of as Darwinism.
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