TY  - RPRT
TI  - Safety on stairs 
AU  - Carson, D H
AU  - Archea, J C
AU  - Margulis, S T
AU  - Carson, F E
PY  - 1978
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS BSS 108
DO  - 10.6028/NBS.BSS.108
ER  -