Search History Select to load keywords (type equals "Thesis") AND (dateIssued equals "[1957 TO 1999]") AND (subject equals "Surface active agents") AND (subject equals "Flotation") AND (dateIssued equals "1997") AND (author equals "Penny Ratanarojanatam") (author equals "ผุสตี ปริยานนท์") AND (author equals "วิเชฏฐ์ คนซื่อ") AND (author equals "ยุพาพร วิสูตร") AND (dateIssued equals "2562") AND (author equals "ธฤษวรรณ ไตรจิตร์")
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