TY  - RPRT
TI  - Letter Circular 324: brake testing devices (superseding Letter Circular 245)
PY  - 1932
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 324r1932
DO  - 10.6028/NBS.LCIRC.324r1932
ER  -