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学科分类

学科分类. PQDD 共收录了 17618 篇论文。从论文篇数统计来看，应用科学最多， 其次是生物科学，纯科学及社会科学。 Biological sciences: 2070 11.7% Earth and environmental sciences: 1599 9% Health sciences: 1114 6%

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学科分类

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  1. 学科分类 PQDD共收录了17618 篇论文。从论文篇数统计来看，应用科学最多， 其次是生物科学，纯科学及社会科学。 Biological sciences: 2070 11.7% Earth and environmental sciences: 1599 9% Health sciences: 1114 6% Pure sciences: 2051 11.6% Applied sciences: 7005 40% Psychology: 256 1.6% Communications and arts: 365 2% Education: 751 4.3% Language,literature,and linguistics: 389 2.3% Social sciences: 2018 11.5%

  2. 基本检索

  3. 高级检索

  4. 二次检索

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