TY  - RPRT
TI  - Report of the 56th national conference on weights and measures 1971 
AU  - Bell, Frances C
AU  - Wollin, Harold F
PY  - 1972
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS SP 358
DO  - 10.6028/NBS.SP.358
ER  -