000 00422nam a2200145Ia 4500
008 140317s9999 xx 000 0 und d
082 _a363.738 7
100 _aPurohit,S.K.
245 _aChemical and biological methods of water and air pollution control.
260 _aBikaner
_bAgro Bot.Pub.
_c1985
300 _a56
650 _aSocial Problems , Service
653 _aSocial Problems and Services
942 _2ddc
_cBK
999 _c10661
_d10661