TY  - RPRT
TI  - Circular of the Bureau of Standards no. 312: United States government master specification for matting, rubber, for use around electrical apparatus or circuits not exceeding 3,000 volts to ground
PY  - 1926
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 312
DO  - 10.6028/NBS.CIRC.312
ER  -