Unicode ; three-letter difference telegraphic code /

Bibliographic Details

Corporate Author:	Československá obchodní komora
Other Authors:	Závada, Dušan, 1915-, Cipl, L.
Format:	Book
Language:	English
Published:	Prague], [publisher not identified] ; 1967.
Edition:	[English pocket ed.
Subjects:	Cipher and telegraph codes.