Iingan, Marites S. <br/><br/>
Instructional competence of master teachers:   its relation to the academic performance of pupils in the Division of Cagayan 
Marites S. Iingan  
 - Tuguegarao City  University of Cagayan Valley  2013 
 - x, 108. 
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<br/><br/><label>LC Class. No.: </label>CD-02983t