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The American People: the findings of the 1970 census
The American People the findings of the 1970 census Author:E. J. Kahn Inspired by Darwin's observations of the Galapagos finches, the author reveals how the incremental changes that occur between generations of finches demonstrate natural selection. Through the author's discussions with many prominent ornithologists, the reader learns the differences among these finches and the effects the environment and sexual p... more »ressures have had on these birds.« less