Residual current operated circuit-breakers without integral overcurrent protection for house and similar uses (RCCB`s). Part 2-1. Applicability of the general rules to RCCB`s functionally independent of line voltage
Textiles. Quantitative chemical analysis. Part 21. Mixtures of chlorofibres, certain modacrylics, certain elastanes, acetates, triacetates and certain other fibres (method using cyclohexanon)