Search History Select to load keywords (author equals "วิเชฏฐ์ คนซื่อ") AND (author equals "นพดล กิตนะ") AND (author equals "ธฤษวรรณ ไตรจิตร์") AND (author equals "พชร สิทธิชีวภาค") AND (subject equals "เต่าทะเล") (dateIssued equals "[2500 TO 2566]") AND (dateIssued equals "[2530 TO 2539]") AND (dateIssued equals "2534") AND (subject equals "Academic achievement") AND (subject equals "Mathematics -- Study and teaching (Elementary)") AND (subject equals "ผลสัมฤทธิ์ทางการเรียน")
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