000 00281nam a2200121Ia 4500
008 220201s1992 xx 000 0 eng d
082 _a363.7
_bTReference I
100 _aTripathi, A,K.
245 0 _aClobal Envirnmental Problems .
260 _c1992
300 _a275
942 _2ddc
999 _c7148
_d7148