Instrumentation in wastewater treatment plants / 
prepared by Subcommittee on Instrumentation 
 - 108 páginas 
 - Manual of practice ;  no. 21 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plantas depuradoras de agua
<br/><br/><label>LC Class. No.: </label>TD746  / I57