生产性服务业对经济发展的影响研究:以河南为例

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 2096-2452|30|6|21-25

ISSN: 2096-2452

Source: 河南牧业经济学院学报, Vol.30, Iss.6, 2017-01, pp. : 21-25

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Abstract