TY  - RPRT
TI  - A regional economic assessment of selected window systems 
AU  - Ruegg, Rosalie T
AU  - Chapman, Robert E
PY  - 1981
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 81-2248
DO  - 10.6028/NBS.IR.81-2248
ER  -