Search History Select to load keywords (dateIssued equals "[1996 TO 1999]") AND (dateIssued equals "1999") AND (subject equals "Polymerization") AND (subject equals "ตัวเร่งปฏิกิริยาเมทัลโลซีน") (subject equals "Methane") AND (subject equals "มีเทน") AND (subject equals "Catalysts") AND (subject equals "ออกซิเดชัน")
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