Search History Select to load keywords (author equals "พงชัย หาญยุทธนากร") AND (subject equals "การอนุรักษ์ทรัพยากรธรรมชาติ") AND (subject equals "ความหลากหลายทางชีวภาพ") AND (subject equals "Project management") AND (subject equals "Conservation of natural resources") (subject equals "ตัวเร่งปฏิกิริยา") AND (subject equals "Pyrolysis") AND (subject equals "Biomass energy") AND (subject equals "Agricultural and Biological Sciences")
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