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  • Valvoda, F.
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    How Changes Are Made in the National Electrical Code.
    Frank Valvoda and Associates, River Forest, IL
    Specifying Engineer, Vol. 37, No. 6, 135, May 1977

  • Valvoda, F.
    view article (1.0)

    Overcurrent Protection: Protecting Against Arcing and Ground Faults.
    Frank Valvoda and Associates, Oak Park, IL
    Actual Specifying Engineer, 92-97,134,136, May 1967