Batten, R. L. (1972). Permian gastropods and chitons from Perak, Malaysia. Part 1, Chitons, bellerophontids, euomphalids and pleurotomarians. Bulletin of the American Museum of Natural History. 147(1): 1-44.
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Batten, R. L.
1972
Permian gastropods and chitons from Perak, Malaysia. Part 1, Chitons, bellerophontids, euomphalids and pleurotomarians
Bulletin of the American Museum of Natural History