TY  - RPRT
TI  - The National Measurement System for the physical properties of atoms and molecules 
AU  - Cooper, J W
AU  - Phelps, A V
AU  - Smith, S J
PY  - 1976
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 75-944
DO  - 10.6028/NBS.IR.75-944
ER  -