Agno, Lilibeth C. <br/><br/>
Pagpapalit wika sa mga interaksyong pangklasrum sa elementarya 
Lilibeth C. Agno 
 -  2003 
 - xiv, 191 leaves  28 cm. 
<br/><br/> Thesis (M.A.Ed. - Filipino) -- Mariano Marcos State University-Graduate School, Laoag City 
<br/><br/>Bibliography: leaves 128-132