000 00570nam a2200157 a 4500
005 20220228110809.0
035 _aF8901000719939
084 _aEPA R2-72- 031 1972
100 _aMorgan, W.E.
245 _ainvestigation of phosphorus removal mechanisms in activated- sludge systems / by W.E. Morgan and E. Gus Fruh
260 _aWashington, D.C. : Environmental Protection Agency
300 _a[158] p.
440 _aEnvironmental protection technology series EPA-R2-72-031
690 _aFósforo - Remoción - Lodo activado - Sistemas
700 _aFruh, E.Gus, coaut.
999 _c65806
_d65806