000 00283nam a2200109Ia 4500
008 200302s9999 xx 000 0 und d
100 _aR S Khoiyang bam and Navindu Gupta
245 _aIntroduction to Environmental Sciences
260 _bTeri pub
260 _c2015
300 _a426 P.,
999 _c4008
_d4008