Park, Gu Yeon books & textbook
Conundrums and Crossroads: A Puzzle Adventure: A Puzzle Adventure 1
Independently published /2023-09-02 Paperback / 83 Pages
Mental Gymnastics : A Workout for the Brain Through Puzzles: A Puzzle Adventure 2
Independently published /2023-09-02 Paperback / 83 Pages
Anyone Easy Math Glossary (Korean Edition)
Gbrain /2019-03-04 Paperback
isbn-10: 8959795895 / isbn-13: 9788959795895
Math Formula Museum (Korean Edition)
Gbrain /2018-08-02 Paperback
isbn-10: 8959795658 / isbn-13: 9788959795659
Mensa Genius Puzzle (Korean Edition)
Gbrain /2017-12-12 Paperback
isbn-10: 8959795224 / isbn-13: 9788959795222
Easiest Math Differential (Korean Edition)
Gbrain /2013-09-23 Paperback
isbn-10: 8959793108 / isbn-13: 9788959793105
