000 00283nam a2200097Ia 4500
008 220505s1993 xx 000 0 und d
041 _aeng
245 _aGlobal environment problems vol-3
260 _aNew Delhi
_bAshish Publishing House
_c1993
650 _aENVIRONMENTAL SCIENCE
_9649323
999 _c452993
_d452993