Universal Decimal Classification. English full edition-Generalities
standard by BSI Group, 08/31/1972
Specification for insulating oil for transformers and switchgear
standard by BSI Group, 11/12/1956
Methods for the analysis of iron and steel. Tunsten in steel (absorptiometric method)
standard by BSI Group, 11/08/1957
Air-break knife switches and air-break isolating switches for voltages not exceeding 660 volts excluding totally-enclosed and flame proof types
standard by BSI Group, 01/30/1933