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A Comparative Study of Patentics Patent Intelligent Retrieval System and State Intellectual Property Office of the P.R.C
PANG Desheng, WANG Fang, LIU Ruijuan
农业图书情报学刊 . 2014, (
5
): 46 -49 . DOI: 10.13998/j.cnki.issn1002-1248.2014.5.012
