Search History Select to load keywords (subject equals "ผลสัมฤทธิ์ทางการเรียน") AND (subject equals "การแก้ปัญหา") AND (dateIssued equals "[2543 TO 2549]") AND (subject equals "Mathematics -- Study and teaching (Elementary)") (dateIssued equals "[2500 TO 2566]") AND (subject equals "ผลสัมฤทธิ์ทางการเรียน") AND (subject equals "Academic achievement") AND (subject equals "วิทยาศาสตร์ -- การศึกษาและการสอน (มัธยมศึกษา)") AND (subject equals "Teaching")
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