Search History Select to load keywords (dateIssued equals "[2500 TO 2566]") AND (subject equals "ผลสัมฤทธิ์ทางการเรียน") AND (subject equals "Academic achievement") AND (subject equals "วิทยาศาสตร์ -- การศึกษาและการสอน (มัธยมศึกษา)") AND (subject equals "Constructivism (Education)") AND (dateIssued equals "2557") (dateIssued equals "[2500 TO 2566]") AND (subject equals "ปริญญาดุษฎีบัณฑิต") AND (dateIssued equals "[2540 TO 2549]") AND (dateIssued equals "2549") AND (author equals "บุญสม ทับสาย")
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