Ladd, H.S. (1972) Cenozoic fossil mollusks from western Pacific islands; gastropods (Turritellidae through Strombidae). U.S. Geological Survey Professional Paper, 532: i–iv, 1–79, pls. 1–20.
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Ladd, H. S.
1972
Cenozoic fossil mollusks from western Pacific islands; gastropods (Turritellidae through Strombidae
I>U.S. Geological Survey Professional Paper</I>, 532: i–iv
