BS-1497 Part 1 - 1957 (with Amendment No.1 - 1960); Impregnated-Asbestos-Covered Copper Conductors Part 1 Round Wire
BS-1497 Part 1 - 1957 (with Amendment No.1 - 1960); Impregnated-Asbestos-Covered Copper Conductors Part 1 Round Wire
- London BSI 1957
- 13+1p
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