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Authors: Phan Thi Huong
Journal: Journal of Science, Vinh University, Volume XXXVI-1B, 2007, pp. 53-60;
ISSN: 1234-1234;
Year: 2007
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| [2] |
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Authors: Phan Huy Ha
Journal: Ha Tinh Television Station;
ISSN: Xuất bản 9 thg 12, 2;
Year: 2007
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