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中国农学通报
基于专利分析法的京津冀农业科技创新能力比较研究
Comparative Study on Agricultural Scientific and Technical Innovation Capability of Beijing, Tianjin and Hebei Based on Patent Analysis
中国农学通报 . 2016, (3): 200 -204 .  DOI: 10.11924/j.issn.1000-6850.casb15080100