TY  - RPRT
TI  - A study of standard test procedures for soiling acoustic tile 
AU  - Cole, Selden D
AU  - Achenbach, Paul R
PY  - 1959
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS RPT 6387
DO  - 10.6028/NBS.RPT.6387
ER  -