Roberts, Roy W.,  1898- <br/><br/>
Vocational and practical arts education :  history, development, and principles / 
Roy W. Roberts 
 - 3d ed. 
 - New York :  Harper & Row,  1971 
 - x, 500 p. :  ill. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vocational education