Methods for measurement of air pollution-Determination of mass concentration of sulphur dioxide in ambient air: Thorin spectrophotometric method
standard by BSI Group, 01/31/1983
Specification. Moulded electrical insulating materials for use at radio frequencies
standard by BSI Group, 03/31/1949
Glossary of terms used in controlling and regulating systems. Process control
standard by BSI Group, 01/01/1949
Sampling and analysis of vegetable tanned and chrome tanned leathers.
standard by BSI Group, 05/28/1946