Gray, William S dan May Hill Arbuthnot. <br/><br/>
People and Progress. 

 - Chicago:  Scot, Foresman and Co.,  1951. 
 - 480p.  ilus,  20 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>NOVEL
<br/><br/><label>LC Class. No.: </label>PE1117  / .G8 1951 
<br/><br/><label>Dewey Class. No.: </label>823.834