Calzada, Cristalyn P. <br/><br/>
Map coloring of Ilocos Norte using chromatic number  / 
Cristalyn P. Calzada, Patricia G. Fahigal 
 - City of Batac :  MMSU,   2024. 
 - xiii, 73 leaves ;  29 cm.  
<br/><br/> Thesis (BS Mathematics) -- Mariano Marcos State University - College of Arts & Sciences, City of Batac, 2024. 
<br/><br/>Bibliography : leaves 52-53