Be Charmed by These Bewitching Books from 2025

Join the Goodreads Author Program

Are you Hian Poh Yap, author of the books below?
Total Colourings of Graphs by Hian Poh Yap Some Topics in Graph Theory by Hian Poh Yap Total Colourings of Graphs by Hian Poh Yap


To join the author program as Hian Poh Yap, you will first need to sign in to Goodreads. Then navigate back to this page to apply.


About the Author Program
Authors on Goodreads
Author Guidelines
Author Program How-To
Author & Advertisers Blog
Ask the Author: Featured Authors
About Goodreads