Search History Select to load keywords (dateIssued equals "[1957 TO 1999]") AND (subject equals "Polyethylene") AND (dateIssued equals "1999") AND (author equals "Pornpirom Moteplay") (author equals "ผุสตี ปริยานนท์") AND (author equals "ธงชัย ฐิติภูรี") AND (author equals "มุกเรขา เชี่ยวชาญชัย")
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