000 00292nam a2200121Ia 4500
008 180721s9999 xx 000 0 und d
100 _a"Duggal, K.N.,"
245 0 _aElements of Public Health Engineering
260 _bS.Chand & Company
260 _c1996
365 _b70.00
942 _cBK
999 _c139324
_d139324