000 00315nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aSingh (Alam) and Sharma (US)
245 0 _aCurrent practices in environmental engineering Vol.1
260 _bInt.BK Traders
260 _c1984
365 _b250
942 _cBK
999 _c213999
_d213999