TY  - BOOK
T1  - Acoustic echo sounding as related to air pollution in urban environments
DA  - 1971.
CY  - Boulder, Colo.,
AU  - Simmons, W. R.
AU  - Wescott, J. W.,
AU  - Hall, Freeman F.,
CN  - QC243 .S57
CN  - QC243
PB  - Environmental Research Laboratories,
PP  - Boulder, Colo.,
PY  - 1971.
N1  - "A United States Department of Commerce publication."
ID  - 110456
KW  - Air
KW  - Noise pollution.
KW  - Sound
TI  - Acoustic echo sounding as related to air pollution in urban environments
ER  -