MolluscaBase source details
Robertson, I. C. (1937). Arion circumscriptus Johnston. The Nautilus. 50(3): 100.
436897
Robertson, I. C.
1937
<i>Arion circumscriptus</i> Johnston
The Nautilus
50(3): 100
Publication
Date
action
by
Arion circumscriptus G. Johnston, 1828 (additional source)