A critique of the theory of evolution, by Thomas Hunt Morgan ... Lectures delivered at Princeton University, February 24, March 1, 8, 15, 1916.

1916:Feb.-Mar.

The system of animate nature; the Gifford lectures delivered in the University of St. Andrews in the years 1915 and 1916, by J. Arthur Thomson.

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The system of animate nature; the Gifford lectures delivered in the University of St. Andrews in the years 1915 and 1916, by J. Arthur Thomson.

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