000 00286nam a2200097Ia 4500
008 140917b1974 xxu||||| |||| 00| 0 eng d
082 _a628.354 GIB
100 _aGibbon, Donald. L.
245 _aAeration of activated sludge in sewage treatment.
260 _aNew York :
_bPergaman,
_c1974
999 _c182183
_d182183