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  <controlfield tag="008">210402s9999    xx            000 0 und d</controlfield>
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   <subfield code="a">60420120</subfield>
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   <subfield code="a">Huỳnh, Tôn Đoàn</subfield>
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   <subfield code="a">Đa dạng loài và sự biến động số lượng theo mùa của quần xã giun đất ở thành phố Cần Thơ :</subfield>
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   <subfield code="b">Luận văn thạc sĩ. Chuyên ngành: Sinh thái học</subfield>
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   <subfield code="c">Huỳnh Tôn Đoàn ; Đỗ Văn Nhượng (Người hướng dẫn khoa học)</subfield>
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   <subfield code="b">Trường Đại học Cần Thơ</subfield>
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   <subfield code="c">2009</subfield>
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   <subfield code="a">Đề tài này nghiên cứu với các nội dung chính như sau: Thu thập mẫu giun đất ( định lượng và định tính) ở thành phố Cần Thơ; Định loại, mô tả đặc điểm hình thái, cấu tạo và giải phẩu của giun đất ở thành phố Cần Thơ; Phân tích tính chất khu hệ, xây dựng khóa định loại của giun đất ở thành phố Cần Thơ; Phân tích các số liệu về sự biến động số lượng theo mùa của quần xã giun đất ở khu vực nghiên cứu; Phân tích số liệu và đặc điểm phân bố của giun đất theo các sinh cảnh và độ sâu khu vực nghiên cứu.</subfield>
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   <subfield code="a">Earthworms</subfield>
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   <subfield code="i">Tuyến</subfield>
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   <subfield code="a">Trung tâm Học liệu Trường Đại học Cần Thơ</subfield>
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