Search History Select to load keywords (subject equals "Polymerization") AND (dateIssued equals "[1998 TO 1999]") AND (subject equals "Metallocene catalysts") AND (author equals "Punlop Horharin") (subject equals "Polymerization") AND (dateIssued equals "[1998 TO 1999]") AND (subject equals "Metallocene catalysts") AND (subject equals "เอทิลีน")
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