TY  - RPRT
TI  - Directions to improve application of systems approach to fire protection requirements for buildings 
AU  - Nelson, Harold E
PY  - 1977
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 77-1273
DO  - 10.6028/NBS.IR.77-1273
ER  -