河北省退耕还林工程生态效率评价研究

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1673-338x|38|9|84-88

ISSN: 1673-338x

Source: 林业经济, Vol.38, Iss.9, 2016-01, pp. : 84-88

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Abstract