On certain conditions attending the geological descent of some North American types of fresh-water gill-bearing mollusks
1976 ◽
Vol 29
(3)
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pp. 383-387
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1952 ◽
Vol 55
(4)
◽
pp. 445
◽
1897 ◽
Vol 4
(1-15)
◽
pp. 415-482
◽
Keyword(s):
1872 ◽
Vol s3-3
(14)
◽
pp. 126-139
◽
Keyword(s):
Keyword(s):