Unionization among American engineers 

 -  1957 
 - 72p  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering
<br/><br/><label>Dewey Class. No.: </label>X9(D):97D.73.N5, J7