00381nam a22001457a 450000500170000002000190001703500130003603700130004910000150006224500680007726000340014530000190017970000180019870000190021620120523135748.0  a8171695434c00  aA-945419  aDPLbENG  aNagi, G.K.  aNoise pollution /cby G.K. Nagi, M.K. Dhillon and G.S. Dhaliwal  aNew DelhibCommonwealthc1999  a221p.c18 cms.  aDhillon, M.K.  aDhaliwal, G.S.