TY  - RPRT
TI  - Calibration and test services of the National Bureau of Standards (Notice of Change Insert sheets are included in a separate folder) 
PY  - 1963
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NBS MP 250
DO  - 10.6028/NBS.MP.250
ER  -