北京地区电子出版业产品结构转移变化趋势研究

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1004-8626|23|2|75-78

ISSN: 1004-8626

Source: 北京印刷学院学报, Vol.23, Iss.2, 2015-01, pp. : 75-78

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Abstract