Home › Authors › Suphāphō̜n Sangūanhai. 👤 Suphāphō̜n Sangūanhai. 1 book Books by Suphāphō̜n Sangūanhai. ʻĒkkasān prakō̜p kānrīan ʻĒkkasān prakō̜p kānrīan sangkhommasưksā rāiwichā Sō̜. 071, thō̜ngthin khō̜ng rao 1, Čhangwat Phitsanulōk 1994