Armstrong, William H. <br/><br/>
Study is hard work 

 - 2nd ed. 
 - New York  ; Harper And Row Publisher  , 1956 
 - ix,133p. 
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education<br/>Study
<br/><br/><label>Dewey Class. No.: </label>370  / ARM