TY  - RPRT
TI  - an economic analysis of efficiency improvements to residential gas- and oil-fired central heating equipment 
AU  - Petersen, Stephen R
AU  - Kelly, George E
PY  - 1980
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 80-2079
DO  - 10.6028/NBS.IR.80-2079
ER  -