BS-3188 (part1) - 1960; Enamelled copper conductors (self-fluxing, enamel with polyurethane base) part 1 round wire
BS-3188 (part1) - 1960; Enamelled copper conductors (self-fluxing, enamel with polyurethane base) part 1 round wire
- London BSI 1960
- 33p
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