000 00329nam a2200145Ia 4500
008 190201s9999 xx 000 0 und d
082 _a620
082 _b8 CUR
100 _a"Singh, Alam"
245 0 _aEnvironmental Science An
260 _aNew Delhi
260 _bInternational Book Trade
260 _c1986
300 _a254
999 _c28608
_d28608