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Keywords:
ELECTRICAL,
CONDUCTORS,
ELECTRICITY,
ZINC,
WIRE,
RESISTANCE,
TESTS,
METALS,
COPPER,
TELEGRAPHS,
BRONZE,
GALVANISED,
STRENGTH,
ALLOYS,
PHOSPHOROUS,
TELEGRAPHY,
METALLURGY,
COMMUNICATIONS
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© Thomas Telford and ICE
1884
