Gould, S.J. (1969). An evolutionary microcosm: Pleistocene and Recent history of the land snail P. (Poecilozonites) in Bermuda. Bulletin of the Museum of Comparative Zoology. 138(7): 407-532.
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Gould, S.J.
1969
An evolutionary microcosm: Pleistocene and Recent history of the land snail <i>P. (Poecilozonites)</i> in Bermuda