TY  - RPRT
TI  - Letter Circular 353: railroad track scale testing service of the National Bureau of Standards fiscal year July 1, 1931 to June 30, 1932
PY  - 1933
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 353
DO  - 10.6028/NBS.LCIRC.353
ER  -