TY  - RPRT
TI  - Report of the 53rd National Conference on Weights and Measures, 1968 
AU  - Koeser, R L
PY  - 1969
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS SP 311
DO  - 10.6028/NBS.SP.311
ER  -