MolluscaBase source details
Bartsch, P. (1937). The typical form of Helminthoglypta californiensis Lea. The Nautilus. 51(1): 36.
405499
Bartsch, P.
1937
The typical form of <i>Helminthoglypta californiensis</i> Lea
The Nautilus
51(1): 36
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Helminthoglypta californiensis (I. Lea, 1838) (additional source)