| Registros del 1 al 2 de 2 encontrados |
1.- A classification of the American operculate land mollusks of the family annularidae
Bartsch, Paul; Henderson, John B.
Washington: Government Printing Office, 1920
C 505 - 13
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2.- The west american mollusks of the families rissoellidae and synceratidae, and the rissoid genus barleeia
Bartsch, Paul
Governmement Printing Office
C 278 - 21
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