Polymeric materials for treatment and recovery of petrochemical wastes 

 - Washington :  U.S. Government Printing Office,  [n.d.] 
 - 68 p. :  ill. ;  28 cm. 
 - Water pollution control research series .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum industry and trade--By-products<br/>Sewage--Purification--Reverse osmosis process<br/>Glycerin
<br/><br/><label>Dewey Class. No.: </label>637.356