TY  - BOOK
AU  - Bassler,Ray S.
AU  - Schmitt,L.
AU  - Bartsch,P.
TI  - Shelled Invertebrates of the Past and Present
PY  - 1931///
CY  - New York : 
PB  - Smith Scient. Series, 
N1  - Donación. With Chapters on Geological History
ER  -