Iballa, Anita Barayoga., <br/><br/>
Social reinforcement used by multigrade teachers in baao district, division of camarines sur: an appraisal/ 
Anita Barayoga Iballa. 
 - San Miguel, Iriga City:  University of Saint Anthony,  2000. 
 - xviii, 111 leaves:  Colored illustraions, tables  29 cm.  
<br/><br/>Includes bibliographical references. 
<br/><br/> Social reinforcement used by multigrade teachers in baao district, division of camarines sur: an appraisal. 
<br/><br/><br/>Tagalog 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Dewey Class. No.: </label> / IB12