TY  - RPRT
TI  - The thermal insulating value of air spaces 
AU  - Robinson, Henry E
AU  - Powlitch, F J
PY  - 1954
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS RPT 3030
DO  - 10.6028/NBS.RPT.3030
ER  -