Contributions to the biology of the Philippine Archipelago and adjacent regions, vol. 6 . Papers on Philippine diatoms, annelids, hydroids, echinoids, and mollusks, pt. 7: The Philippine land mollusks <I>Cochlostyla rufogaster</I> and <I>Obba marmorata and their races</I>
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Contributions to the biology of the Philippine Archipelago and adjacent regions, vol. 6 . Papers on Philippine diatoms, annelids, hydroids, echinoids, and mollusks, pt. 7: The Philippine land mollusks Cochlostyla rufogaster and Obba marmorata and their races