Index of oceanic plotting sheets prepared by the Hydrographic Dept. of the Admiralty showing echo sounding cover to June 1961 ...
Publisher: Hydrographic Dept., Admiralty
Published: 1961
Place of publication: London
Language: eng
Number of pages: 12
Subjects: Echo sounding -- Charts, diagrams, etc. -- Indexes.
Other titles: Oceanic plotting sheets.
Notes: Cover title.