The 1931 international code of signals.
Edition: British ed.
Publisher: HMSO
Published: 1932
Place of publication: London
Language: eng
Subjects: Signals and signaling.; Merchant marine -- Signalling.; Cipher and telegraph codes.; Radio in navigation.
Notes: "This volume must be read in conjunction with Supplement No. 1, supplied gratis to purchasers of the code"--V. 1-2.

Vol. 1: published in 1932, reprinted in 1945; vol. 2: published in 1932, reprinted in 1944.

Supplement (8 p.) inserted in v. 2.

Accompanied by table "High water, Dover, 1961" (2 p.) inserted  in v. 2.

LC copy imperfect: pages of "supplement no. 1" are separated.
Table of contents: title: v. 1. For visual and sound signalling; title: v. 2. For radio signalling.