De Guzman, Edna Luz Torres <br/><br/>
Teachers' use of perfect tenses in oral discourse  : a lingusitic analysis 
Edna Luz Torres De Guzman 
 - Davao City  : University of Mindanao  2019 
 - xiv, 152 pages  with 1 CD ROM  Dissertation 
<br/><br/> Dissertation (Doctor of Philosophy in Applied Linguistics) -- University of Mindanao, March 2019 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Discourse analysis.