Brown's signalling : 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.
Bernard, D. H.
James Brown & Son (Glasgow, Scotland),publisher.
Great Britain.Admiralty.British signal manual.
Edition statement from front cover.
Includes The British signal manual, version first published in December 1912.
"Captain D.H. Bernard has again revised brow's Signalling."--Preface to the nineteenth edition.
Signals and signalling.