Ramalho, R. S. <br/><br/>
Introduction to wastewater treatment processes / 
R. S. Ramalho. 
 - New York :  Academic Press,  1977. 
 - ix, 409 p. :  ill. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0125765509 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage--Purification.