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Clench, W. J. (1935). Physa ampullacea "Gould" Binney. The Nautilus. 49(1): 30-32, pl. 48, pl. 7, fig. 5.
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Clench, W. J.
1935
<i>Physa ampullacea</i> "Gould" Binney.
The Nautilus
49(1): 30-32, pl. 48, pl. 7, fig. 5
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