Search History Select to load keywords (subject equals "ผลสัมฤทธิ์ทางการเรียน") AND (subject equals "ระบบการเรียนการสอน") AND (subject equals "เพศศึกษา") AND (subject equals "ทักษะชีวิต") (subject equals "ผลสัมฤทธิ์ทางการเรียน") AND (subject equals "การสอน") AND (subject equals "Teaching") AND (dateIssued equals "[2531 TO 2539]") AND (subject equals "Academic achievement") AND (subject equals "Science teachers")
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