Home › Authors › ʻUbonrat Siriyuwasak. 👤 ʻUbonrat Siriyuwasak. 3 books Books by ʻUbonrat Siriyuwasak. Sư̄mūanchon nai yuk patirūp Sư̄mūanchon nai yuk patirūp = 2002 Rabop witthayu læ thōrathat T Rabop witthayu læ thōrathat Thai 1999 ʻĀrom khan nai sư̄muanchon ʻĀrom khan nai sư̄muanchon 1993