van der Schalie, H. (1948). The land and fresh-water mollusks of Puerto Rico. Museum of Zoology, University of Michigan, Miscellaneous Publications. no. 70: 1-134. (Ann Arbor).
297570
van der Schalie, H.
1948
The land and fresh-water mollusks of Puerto Rico
Museum of Zoology, University of Michigan, Miscellaneous Publications