| On the occurrence of Alderia modesta (Lovén) and Limapontia depressa A. & H. on the saltmarshes of the Dutch Waddenzee (Gastropoda, Nudibranchia) |  |
| den Hartog, C.; Swennen, C. (1952). On the occurrence of Alderia modesta (Lovén) and Limapontia depressa A. & H. on the saltmarshes of the Dutch Waddenzee (Gastropoda, Nudibranchia) Beaufortia 19: 1-3 |
| In: Beaufortia. Zoological Museum: Amsterdam. ISSN 0067-4745, meer |
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