Segel David <br/><br/>
Frustration in adolescent youth : It development and implications for the school program 
U. S. Department of Health, Education, and Welfare 
 - Washington, USA  U.S. Government Printing Office  
 - vi,65p. 
<br/><br/><br/>Bulletin 1951, No. 1 
<br/><br/><label>Source: </label>Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Child Psychology