ISSN：1001-7143　CN：11-2684/G3 中文
Trend analysis for the proportional change of basic research in international medical journals from multiple categories and with different influence
YU Ping,YI Xianfu
Chinese Journal of Scientific and Technical Periodicals . 2019, (9): 1022 -1028 .  DOI: 10.11946/cjstp.201904300329

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