TY  - BOOK
AU  - Hershler,Robert
AU  - Holsinger,John R.
AU  - Hubricht,Leslie
TI  - A revision of the North American freshwater snail genus fontigens (prosobranchia: Hydrobiidae)
PY  - 1990///
CY  - Washington
PB  - Smithsonian Institution Press
KW  - Fotigens
KW  - North America
KW  - Classification
ER  -