TY  - RPRT
TI  - Circular of the Bureau of Standards no. 501: federal and state weights an measures laws through 1949 enactments
AU  - Schwartz, Kathryn M
AU  - Smith, Ralph W
PY  - 1951
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS CIRC 501
DO  - 10.6028/NBS.CIRC.501
ER  -