A steel-making community  : Pittsburgh, pennsylvania 

 - 2nd ed. 
 - Boston :  Allyn And Bacon,  1974. 
 - 122p. 
<br/><br/> PB 
<br/><br/><br/>Eng 
<br/><br/><label>Subjects--Topical Terms: </label><br/>A steel mill-Factory
<br/><br/><label>Dewey Class. No.: </label>372.83  / EDA