TY  - RPRT
TI  - Recommended specification for test procedures to determine suitability of ducts for use in residential warm air heating and air-conditioning systems 
AU  - Cole, Selden D
AU  - Achenbach, Paul R
PY  - 1964
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS report ; 8337
DO  - 10.6028/NBS.RPT.8337
ER  -