Baker, F. C. (1920). A new form of Amnicola from the Ohio Pleistocene deposits with notes on a Physa from the same formation. The Nautilus. 33(4): 125-127.
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Baker, F. C.
1920
A new form of <i>Amnicola</i> from the Ohio Pleistocene deposits with notes on a <i>Physa</i> from the same formation.