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Cultivated Land Quantity Change and Its Impacts on Food Security in Tsinan
Yao Huimin, Zhang Fengrong, Zhang Xijin, Zhu Zhenlin, Sui Xueyan
Chinese Agricultural Science Bulletin . 2007, (8): 448 -448 .  DOI: 10.11924/j.issn.1000-6850.0708448