TY  - BOOK
AU  - Walas,John J., x
AU  - x
TI  - On the nature of continental shelves: x
SN  - 012733775
U1  - 551.41/W222o 
PY  - 1988///
CY  - New York
PB  - Academic press 
KW  - Marine biology
KW  - Continental shelf
ER  -