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Charles Darwin, Gradualism and Punctuated Equilibria

David Penny
Systematic Zoology
Vol. 32, No. 1 (Mar., 1983), pp. 72-74
DOI: 10.2307/2413221
Stable URL: http://www.jstor.org/stable/2413221
Page Count: 3
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Charles Darwin, Gradualism and Punctuated Equilibria
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