Gosliner T.M.; Bertsch H. (1988). A review of the genus Berthella (Opisthobranchia: Notaspidea) from the Pacific coast of North America. The Veliger. 31(1-2): 46-67.
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Gosliner T.M.; Bertsch H.
1988
A review of the genus <i>Berthella</i> (Opisthobranchia: Notaspidea) from the Pacific coast of North America