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601. Regional Substitution of Farmland Social Insurance Function
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602. Application of electrical automation control in intelligent
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603. mechanical engineering discipline evaluation of NSFC proposa
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604. 哲学范式转换,transformation of Philosophical Paradigm,音标,读音,翻译,
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605. Stoichiometric characteristics of nitrogen and phosphorus in
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606. Investigation of Waste Classification and Collection Actual
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607. Effects of biological tillage on physicochemical properties
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608. China elementary education imbalance standards of assessment
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609. Comparative analysis of national medical liability insurance
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610. migration of population, migratory traits, migratory centre,
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