TY  - RPRT
TI  - Calibration and related measurement services of the National Bureau of Standards 
AU  - Kieffer, L J
PY  - 1981
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS SP 250e1980
DO  - 10.6028/NBS.SP.250e1980
ER  -