British Standard Specifications for 4 Volt Miners' Handlamp Bulbs. (see also Colliery Guardian v 148 n 3819 Mar 9 1934 p 446-7)


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    Title :

    British standard specifications for 4 volt miners' handlamp bulbs


    Additional title:

    Brit Standards Instn-Standard Specifications



    Publication date :

    1934


    Size :

    22 pages


    Type of media :

    Standard


    Type of material :

    Print


    Language :

    English


    Keywords :