North American freshwater leeches, exclusive of the Piscicolidae
Subtitle: with a key to all species
By: [by] Roy T. Sawyer.
Series: Illinois biological monographs, 46
Publisher: University of Illinois Press
Published: 1972
Place of publication: Urbana
Language: eng
Number of pages: 154
Subjects: Glossiphoniidae; Erpobdellidae; Hirudinidae; Leeches -- North America
Notes: Bibliography: p. 91-106.