00342nam a2200109Ia 450000500170000000800410001705000200005810000160007824500520009426000340014665000520018020251229181955.0251229s9999    xx            000 0 und d  aTD 365 .T4 1983  aTHY TEBBUTT 0aPRICIPLES OF WATER QUALITY CONTROLcTEBBUTT THY  aOXFORDb PERGAMON PRESSc1971  aWater Quality-Kenya-Embu County-Rupingazi River