Search History Select to load keywords (dateIssued equals "[2500 TO 2565]") AND (author equals "ชัชวาล ใจซื่อกุล") AND (author equals "จิรศักดิ์ สุจริต") AND (author equals "ดวงแข สิทธิเจริญชัย") AND (dateIssued equals "2550") (subject equals "Plant extracts") AND (subject equals "Agricultural and Biological Sciences") AND (subject equals "ESSENTIAL OILS") AND (subject equals "น้ำมันหอมระเหย")
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