Search History Select to load keywords (type equals "Thesis") AND (dateIssued equals "[2000 TO 2099]") AND (subject equals "Catalysts") AND (subject equals "เอทิลีน") AND (dateIssued equals "2013") AND (subject equals "Ethylene") (author equals "บุญใจ ศรีสถิตย์นรากูร") AND (author equals "พรนิภา ลีละธนาฤกษ์") AND (author equals "พวงเพ็ญ ชุณหปราณ")
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