The genus Modulus in the Western Atlantic
Abbott, R.T. (1944). The genus Modulus in the Western Atlantic. Johnsonia: Monographs of the marine mollusks of the Western Atlantic, 1(14). Department of Mollusks, Museum of Comparative Zoology: Cambridge. 8 pp.
Deel van: Clench, W.J. (Ed.) Johnsonia: Monographs of the marine mollusks of the Western Atlantic. Department of Mollusks, Museum of Comparative Zoology: Cambridge. , meer
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