TY  - RPRT
TI  - Addendum to earth terminal measurement system maintenance manual 
AU  - Wakefield, John P
PY  - 1981
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 81-1641
DO  - 10.6028/NBS.IR.81-1641
ER  -