Zerbe, Richard O., <br/><br/>
Urban transportation for the environment / 
Richard O. Zerbe, Kevin Croke. 
 - Cambridge, Mass. :  Ballinger,  1975. 
 - xiii, 182 pages :  illustrations ;  23 cm. 
<br/><br/><label>ISBN: </label>0884103250 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Urban transportation--Environmental aspects.<br/>Air--Pollution.<br/>Automobile exhaust gas.