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, D.C.
PB  - Smithsonian Institution Press
ER  -