Hayes, B. D. <br/><br/>
Instructor?s guide for vehicle emissions control training / 
B. D. Hayes, M. T. Maness and R. A. Ragazzi 
 - Washington, D. C. :  United States Government Printing Office,  1978 
 - ix, 92 p. :  fig. ;  28 cm. 
<br/><br/> EPA-45/3-77-033 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Naval education--United States<br/>Teaching--Aids and devices--United States
<br/><br/><label>Dewey Class. No.: </label>373.243