TY  - BOOK
AU  - Ojha, D D
TI  - Dhwani pradushan
SN  - 81-85829-08-X
U1  - 612.014453 21st
PY  - 1994///
CY  - Delhi
PB  - Gyan Ganga
KW  - Noise pollution; Sound-Waves; Decibels
ER  -