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环京津贫困地区退耕与贫困、反贫困问题研究
张贵军
Research on Converting Farmland to Forest, Poverty and Antipoverty in the Poverty-stricken Area around Beijing and Tianjin
中国农学通报 . 2012, (23): 133 -138 .  DOI: 10.11924/j.issn.1000-6850.2011-3207