TY  - RPRT
TI  - Standards for athletic helmets--state of the art and recommendations 
AU  - Mahajan, Bal M
PY  - 1974
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 73-276
DO  - 10.6028/NBS.IR.73-276
ER  -