Search History Select to load keywords (subject equals "ผลสัมฤทธิ์ทางการเรียน") AND (subject equals "Computer-assisted instruction") AND (subject equals "คอมพิวเตอร์ช่วยการสอน") AND (author equals "สายทิพย์ ชลธาร") AND (subject equals "Programmed instruction")
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