Reverse osmosis technical manual / 
United States, Department of Interior 
 - Washington, D.C. :  The Department,  1979 
 - Various pagings ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Saline water conversion--Reverse osmosis process<br/>Sewage--Purification--Biological treatment
<br/><br/><label>Dewey Class. No.: </label>628.167