TY  - BOOK
AU  -  Ballard,Robert D.
ED  -  National Geographical Society.
TI  -  The ocean realm / 
SN  -  0870442511
U1  -  578.77 
PY  - 1978///
CY  -  Washington D.C. : 
PB  -  The National Geographic Society, 
KW  -  Underwater exploration
KW  -  Marine biology
N1  -  Include bibliographical references and index
ER  -