TY  - BOOK
AU  - Griffin,Gwyn
TI  - An operational necessity
U1  - 823.91 18
PY  - 1967///
CY  - New York
PB  - Putnam
KW  - World War, 1939-1945
KW  - Naval operations
KW  - Submarine
KW  - Fiction
KW  - Submarines (Ships)
KW  - War stories
KW  - gsafd
KW  - Sea stories
KW  - lcsh
ER  -