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ORIGIN AND EVOLUTION OF LIFE 307
Walcott, Charles D., 1914. Cambrian Geology and PalsBontology, III., No. 2, Pre-Cambrian Algonkian Algal Flora. SmHhsonian Miacell, Collections, Vol. 64, No. 2, pp. 77-156. Washington, 1914.
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Wilson, Edmund B., 1906. The Cell in Development and Inheritance. New York, 1906.
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