Olsen, O. W. (1937). A systematic study of the trematode subfamily Plagiorchiinae Pratt, 1902. Transactions of the American Microscopical Society. 56 (3): 311–339.
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Olsen, O. W.
1937
A systematic study of the trematode subfamily Plagiorchiinae Pratt, 1902
Transactions of the American Microscopical Society