TY  - RPRT
TI  - Letter Circular 894: publications relating to accident prevention and safety (supersedes Letter Circular 806)
PY  - 1948
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 894
DO  - 10.6028/NBS.LCIRC.894
ER  -