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   <subfield code="b">Luận văn tốt nghiệp Cao học ngành: Hệ thống Nông nghiệp</subfield>
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   <subfield code="a">Rice,Cây lúa</subfield>
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   <subfield code="a">Trung tâm Học liệu Trường Đại học Cần Thơ</subfield>
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