Search History Select to load keywords (subject equals "Polyethylene") AND (subject equals "โพลิเอทิลีน") AND (subject equals "ยาง") AND (subject equals "โพลิเมอร์ผสม") AND (subject equals "Maleic anhydride") AND (author equals "Pornpirom Moteplay") (dateIssued equals "[2000 TO 2099]") AND (subject equals "Biomass energy") AND (subject equals "Vegetable oils") AND (subject equals "Emulsion") AND (subject equals "อิมัลชัน")
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