000 00284nam a2200121Ia 4500
008 180721s9999 xx 000 0 und d
100 _aP.K.Gupta
245 0 _a"Methods of environmental analysis Water, Soil & Air"
260 _bNil
260 _c0
365 _b0.00
942 _cBK
999 _c126270
_d126270