Brown's signalling
Subtitle: how to learn the commercial code and all other forms of signalling as required at B.O.T. examinations, to which is appended the British signal manual, comprising a complete signal book for small vessels.  Marconi wireless telegraphy  explained.
Contributors: Great Britain. Admiralty.
Publisher: J. Brown
Published: 1917
Place of publication: Glasgow
Language: eng
Number of pages: 250
Subjects: Merchant marine -- Signalling; Signals and signalling
Notes: Lettered on cover: 20th edition.