Relles, Marl James P., <br/><br/>
21st century skills of araling panlipunan teachers in public secondary schools of Libmanan north district, schools division of Camarines Sur / 
Mark James P. Relles. 
 - San Miguel, Iriga City:  University of Saint Anthony,  2017. 
 - 240 leaves : 
<br/><br/>Include bibliographical references  
<br/><br/><label>Dewey Class. No.: </label>371.3078  / R22