Harry, H. W. (1952). Carychium exiguum (Say) of Lower Michigan; morphology, ecology, variation and life history (Gastropoda, Pulmonata). The Nautilus. 66(1): 5-7.
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Harry, H. W.
1952
<i>Carychium exiguum</i> (Say) of Lower Michigan; morphology, ecology, variation and life history (Gastropoda, Pulmonata)