Motor vehicle emissions control book seven catalytic converter systems / 
by B. D. Hayes...[et al.] 
 - Washington, D.C. :  U.S. Environmental Protection Agency,  1977 
 - Various pagings ;  27 cm. 
 - Environmental Protection Agency ;  no.450/3-77-042 .
<br/><br/> November 1977 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Motor Vehicles<br/>Automobiles
<br/><br/><label>Dewey Class. No.: </label>629.2