000 00271nam a2200109Ia 4500
100 _aTebbutt T H Y
250 _aEdn 4
245 _aPrinciples of Water Quality Control .-Edn 4
260 _bPergamon Press, U K
082 _aG91:(D555)/N92/B19377
300 _app 251; 23*15
999 _c4345
_d4345