Permissible electric cap lamps and ventilation in certain California mines and water-tunnel construction

An edition of Permissible electric cap lamps and ventilation in certain California mines and water-tunnel construction (1932)

Permissible electric cap lamps and ventilation in certain California mines and water-tunnel construction

By S. H. Ash

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Publish Date

1932

Publisher

U.S. G.P.O.

Language

eng

Pages

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