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531. Investigation of Waste Classification and Collection Actual
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532. Effects of biological tillage on physicochemical properties
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533. China elementary education imbalance standards of assessment
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534. Comparative analysis of national medical liability insurance
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535. migration of population, migratory traits, migratory centre,
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536. 上海交大研究发表《The Journal of Immunology》文章
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537. Regional Difference of Land Marketization in China
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538. Aesthetic Features of Calligraphy as Ceramic Decoration
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539. Influence of Underwriters' Venture Capital:Empirical Evidenc
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540. New Progressions and Development Direction of Pediatrics
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