Ecological engineering for wastewater treatment 

 - Boca Raton  CRC Press  1997 
 - 451p. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Sewage-Purification-Biological Treatment<br/>Ecological Engineering
<br/><br/><label>Dewey Class. No.: </label>628.43  / E80E