000 00331nam a2200145Ia 4500
008 220926s9999 xx 000 0 und d
100 _aK.Mukkanti
245 0 _aEnvironmental Studies
250 _a1st Ed
260 _aNew Delhi
260 _bS.Chand & Sons
260 _c2010
650 _aEnvironmental Studies
942 _cBK
999 _c23778
_d23778