TY  - BOOK
AU  - Hyman, Libbie Henrietta
TI  - The Invertebrates: ( Mollusca I ) Acanthocephala, Polyplacophora, Monoplacophora, Gastropoda the coelomate Bilateria (vol-VI)
U1  - 595.1 
PY  - 1993///
CY  - new york
PB  - CBS
ER  -