Search History Select to load keywords (subject equals "ผลสัมฤทธิ์ทางการเรียน") AND (subject equals "การแก้ปัญหา") AND (dateIssued equals "[2543 TO 2549]") AND (subject equals "Academic achievement") AND (subject equals "Problem solving") AND (author equals "ดวงทิพย์ เพ็ชรนิล")
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