TY  - BOOK
AU  - Hershler,Robert
TI  - Systematics of the North and Central American aquatic snail genus Tryonia (Rissooidea:Hydrobiidae)
PY  - 2001///
CY  - Washington, D.C.
PB  - Smithsonian Institution Press
KW  - Tryonia
KW  - Classification
N1  - Includes bibliographical references (p. 51-53)
ER  -