Risk, Thomas Marion,   1885- <br/><br/>
Principles and practices of teaching in secondary schools / 
by Thomas M. Risk 
 - New Delhi :  Eurasia Publishing House,  1965 
 - 526 p. ;   23 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Experimental methods<br/>Education, Secondary<br/>Educational psychology