Dek Thai bon thāng sām phrǣng botsangkhro̜ kō̜ranī sưksā dek læ yaowachon radap čhangwat nai khrōngkān tittām saphāwakān dek læ yaowachon rāi čhangwat : pī 2547-2548 by Čhulākō̜n Māsathīanwong | Menrva Books