Stoltzfus, John C. <br/><br/>
The complete guide to science-fair competition / 
by John C. Stoltzfus and Morris N. Young. 
 - New York :  Hawthorn,  1972. 
 - 245 p. :  ill. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>LCCN: </label>74133435 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Exhibitions.
<br/><br/><label>Dewey Class. No.: </label>507.4