Engineering index annual. 
 Engineering index  Ei annual 

<br/><br/>
<br/><br/><label>ISSN: </label>0360-8557 
 = Engineering index annual  (1968) 
 = Eng. index annu.  (1968) 
<br/><br/><label>LC Class. No.: </label>Z5851 
<br/><br/><label>Dewey Class. No.: </label>620