อำมะรา น, อนุศาสนนันท์ ส, งามฤทธิ์ ณ. THE CONSTRUCTION OF MATHEMATICAL PROBLEM-SOIVING PROCESS TEST FOR STUDENTS IN GRADE 9 IN THE OFFICE OF PROVINCIAL EDUCATION CHONBURI. Res Comm Soc Dev J [internet]. 2019 Jan. 1 [cited 2026 Sep. 12];13(1):251-63. available from: https://so04.tci-thaijo.org/index.php/NRRU/article/view/185823