Introduction to discrete structure 
Bungay, James Darryl ; Costales, Jefferson ; Almazan, Edmund 
 - 1st Ed. 
 - Manila: Cisne Printing Service  2020 
 - 155 p. ; 22.9cm. 
<br/><br/><label>ISBN: </label>9786218148024 
<br/><br/><label>Dewey Class. No.: </label>Fil 519.5 B942 2020