张家口农业生态旅游产品差异化现状、问题及对策

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1673-2022|17|1|56-59

ISSN: 1673-2022

Source: 河北软件职业技术学院学报, Vol.17, Iss.1, 2015-01, pp. : 56-59

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Abstract