TY  - RPRT
TI  - Safety rules for the installation and maintenance of electric utilization equipment: consisting of part 3 and the grounding rules of the fourth edition of the national electrical safety code 
PY  - 1926
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS HB 7
DO  - 10.6028/NBS.HB.7
ER  -