Keen, A. M. (1966). Moerch's west Central American Molluscan types with proposal of a new name for a species of Semele. Occasional papers of the California Academy of Sciences. 59: 1-33, 41 figs.
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Keen, A. M.
1966
Moerch's west Central American Molluscan types with proposal of a new name for a species of <i>Semele</i>
Occasional papers of the California Academy of Sciences