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511. 施工企业多项目管理模式实施模型构建研究 Research on Implementation Mode
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512. Study on the Production of Tourism Space and Residents Exper
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513. The cognition and willingness of tourist on low carbon touri
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514. On the concepts of civilian sport, folk sport, national spor
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515. Study on PK/PD model for traditional Chinese medicine biopha
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516. On human rights protection in the Application Law of Foreign
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517. An Empirical Research on the Gender Difference for Rural Mic
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518. On the teaching reform of the Course in Interior Design
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519. 智能学科门户搜索引擎,intelligent search engine based on subject portal
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520. Found the research frame on the arable land evaluation based
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