TY  - RPRT
TI  - Transactions matrix description of the National System of Physical Measurement 
AU  - Sangster, Raymond C
PY  - 1976
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 75-943
DO  - 10.6028/NBS.IR.75-943
ER  -