Vergel, Virgilio P. <br/><br/>
Sexual behavior the challenge of human relationship introduction/ 
Virgilio P. Vergel. 
 - Philippines:   In the Grade School, Inc.,   ©2012.  
 - v61 n5, page 183;  28 cm.  
<br/><br/> The Modern Teacher. 
<br/><br/><label>ISSN: </label>2094-8042  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sexual behavior
<br/><br/><label>Dewey Class. No.: </label>DPer 370.105 M72 Jan-Dec 2012 V. 60-61