Overhead line-wire material (non ferrous) for telegraph and telephone purposes
standard by BSI Group, 03/03/1927
Universal Decimal Classification. English full edition-Economics
standard by BSI Group, 10/31/1985
Testing the strength of yarns and threads from packages-Methods for determination of breaking strength and breaking extension
standard by BSI Group, 04/28/1989
Specification. Measurement of photographic transmission density
standard by BSI Group, 08/06/1947
Specification for hard-drawn copper solid and stranded circular conductors for overhead power transmission purposes
standard by BSI Group, 04/14/1930