TY  - BOOK
AU  - Earle,Sylvia A.
AU  - Giddings,Al
ED  - National Geographic Society (U.S.).
TI  - Exploring the deep frontier: The adventure of man in the sea 
SN  - 0870443437
U1  - 910/.09162 
PY  - 1980///
CY  - [Washington, D.C.]
PB  - The Society
KW  - Underwater exploration
KW  - Deep diving
N1  - Includes index; Bibliography: p. 285
ER  -