The 1931 international code of signals
Edition: American ed. (Reprinted 1952) Vol . I. For visual and sound signaling.
Series: U.S. Hydrographic Office. [Publication] -- no.87; H.O. pub -- no. 87
Publisher: U.S. Govt. print. Off.
Published: 1952
Place of publication: Washington
Language: eng
Number of pages: 361