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The Primary Exploration of Evolutionary Process of Agricultural Eco-economic System at Wangdonggou Watershed in Gully Region of Loess Plateau
Li Wenjun, Wang Jijun,, Hao Mingde,
Chinese Agricultural Science Bulletin . 2007, (7): 593 -593 .  DOI: 10.11924/j.issn.1000-6850.0707593