TY  - RPRT
TI  - Economic analysis of insulation in selected masonry and wood-frame walls 
AU  - Petersen, Stephen R
PY  - 1979
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 79-1789
DO  - 10.6028/NBS.IR.79-1789
ER  -