TY  - BOOK
ED  - Great Britain.
TI  - The 1931 international code of signals
T2  - U.S. Hydrographic Office. [Publication]
U1  - 358.24 
PY  - 1952///
CY  - Washington
PB  - U.S. Govt. Print. Off.
N1  - On cover: International code of signals (American edition) Vol. II - Radio. 1931. U.S. Navy. Hydrographic office
ER  -