TY  - RPRT
TI  - Letter Circular 259: railroad track scale testing service of the U.S. Bureau of Standards during the fiscal year July 1, 1927 to June 30, 1928
PY  - 1928
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 259
DO  - 10.6028/NBS.LCIRC.259
ER  -