Baker, F. C. (1928). The Mollusca of Chautauqua Lake, New York, with descriptions of a new variety of Ptychobranchus and of Helisoma. The Nautilus. 42(2): 48-60.
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Baker, F. C.
1928
The Mollusca of Chautauqua Lake, New York, with descriptions of a new variety of <i>Ptychobranchus</i> and of <i>Helisoma</i>
