TY  - BOOK
AU  - Easten,N.H.
TI  - Invertebrate paleontology 
U1  - 562 EAS  
PY  - 1960///.
CY  - New York : 
PB  - Harper & Row, Publishers, 
KW  - Invertebrates, Fossil
N1  - Includes index.
ER  -