TY  - RPRT
TI  - Recommended practice for measuring benefitcost and savings-to-investment ratios for buildings and building systems 
AU  - Marshall, Harold E
AU  - Ruegg, Rosalie T
PY  - 1981
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 81-2397
DO  - 10.6028/NBS.IR.81-2397
ER  -