TY  - RPRT
TI  - Advanced mass calibration in state laboratories 
AU  - Schoonover, Randall M
PY  - 1983
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 83-2752
DO  - 10.6028/NBS.IR.83-2752
ER  -