TY  - BOOK
AU  - Cushman,Joseph A.
TI  - Foraminifera : their classification and economic use
U1  - 563.1 CUS  
PY  - 1969///.
CY  - Cambridge : 
PB  - Harvard university Press, 
KW  - Foraminifera, Fossil
KW  - Foraminifera
ER  -