TY  - RPRT
TI  - Letter Circular 295: railroad track scale testing service of the National Bureau of Standards fiscal year July 1, 1929 to June 30, 1930
PY  - 1931
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 295
DO  - 10.6028/NBS.LCIRC.295
ER  -