Search History Select to load keywords (author equals "วรณพ วิยกาญจน์") AND (author equals "เพ็ญใจ สมพงษ์ชัยกุล") AND (subject equals "การตกตะกอนชายฝั่ง") AND (subject equals "ปะการัง") AND (subject equals "Corals")
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