明代保定军事建设对山区生态环境的影响——以紫荆关为例

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1671-6116|16|1|15-20

ISSN: 1671-6116

Source: 北京林业大学学报:社会科学版, Vol.16, Iss.1, 2017-01, pp. : 15-20

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Abstract