Ramalho, R. S. <br/><br/>
Introduction to wastewater treatment processes 
R.S. Ramalho 
 - 2nd ed. 
 - New York  Academic Press  1983 
 - ix, 580 p.  ill.  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage--Purification
<br/><br/><label>Dewey Class. No.: </label>628.3