MolluscaBase source details
Webb, G. R. (1940). Arion circumscriptus in Indianapolis, Indiana. The Nautilus. 54(2): 69.
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Webb, G. R.
1940
<i>Arion circumscriptus</i> in Indianapolis, Indiana
The Nautilus
54(2): 69
Publication
Date
action
by
Arion circumscriptus G. Johnston, 1828 (additional source)