Activated sludge manual of practice no. om-9 / 
Prepared by task force on activated sludge ; Edward boyajian, Lee j. glueckstein ; under the direction of the operations & maintenance subcommittee technical practice committee 
 - viii, 182 páginas 
 - Manual of practice ;  om-9 .
<br/><br/><label>ISBN: </label>0943244978 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aguas residuales--Proceso de barro activado--Manuales
<br/><br/><label>LC Class. No.: </label>TD201  / W337