TY  - BOOK
AU  - Beranek, Leo L.
TI  - Noise reduction
SN  - 070048320
U1  - 620.102 
PY  - 1960///
CY  - New York
PB  - McGraw Hill Book Company
KW  - MCE
N1  - 0; 0; 0; 620_102000000000000_NOI
ER  -