000 00287nam a2200109Ia 4500
008 220201s1991 xx 000 0 eng d
100 _aMarkendya, D Kumar
245 0 _aParichayatmak paryavaran pardushan & niyantran
260 _bDelhi:Standard Pub
_c1991
300 _a333
942 _2ddc
999 _c85852
_d85852