000 00312nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aMahida (UN)
245 0 _aWater pollution and disposal of waste water on land
260 _b"Tata Mcgraw Hile, New Delhi"
260 _c1981
365 _b150
942 _cBK
999 _c214251
_d214251