TY  - RPRT
TI  - Letter Circular 620: the model state law on weights and measures (includes amendments adopted in 1936 and 1940)
PY  - 1940
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 620
DO  - 10.6028/NBS.LCIRC.620
ER  -