000 00314nam a22001337a 4500
999 _c68491
_d68488
020 _a8127224723
020 _a978-8127224721
100 _aKukal, S S
245 _aEssentials of Environmental Science
260 _aIndia:
_bKayliani,
650 _aEnvironmental Science
700 _aDhaliwal, G.S.
942 _cBK