Report - GB 4717-2005 - jiangnan.edu.cnsbc.jiangnan.edu.cn/16-GB4717-2005.pdfgb 4717 iso gb , gp. 471 '1—93 1. iso/fdis 7240-2:2002 g-b 4717--1993, cib 4717— 1984 - 4717— 19930 —2005

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