Sulfur dioxide processing (includes a sub-section on Nox emissions) / 
selected by editors of Chemical Engineering Progress. 
 - New York :  American Institute of Chemical Engineers,  1975. 
 - 118 p. :  ill. ;  28 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sulphur dioxide.<br/>Nitrogen oxides.<br/>Gases--Purification.