TY  - RPRT
TI  - Letter Circular 276: railroad track scale testing service of the U.S. Bureau of Standards during the fiscal year July 1, 1928 to June 30, 1929
PY  - 1929
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 276
DO  - 10.6028/NBS.LCIRC.276
ER  -