00511nam a22001697a 450000500170000001000150001702000260003203500140005803700130007208200100008510000180009524500450011326000440015827000760020230000250027850000380030320180502161136.0  aENG-122855  a9789386048622c695.00  aEN-106387  bDBAD/PUB  a333.7  aDhillon, S.S.  aEnvironmental science /cby S.S. Dhillon  aDelhi bGS Publisher Distributorsc2017  aF-7, Gali No. 1, Panchsheel Garden Ext. Naveen Shahdara,bDelhie110032  avii, 276p.c22cm(Hb)  aIt include bibliography and index