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[1] Glenn V. Fuguitt:Rural and Small Town America, Russell Sage Foundation, New York, 1989, P31.
[2] William H, Frey:The Revival of Metropolitan Population Growth in the United States:An Assessment of Finding from the 1990 census Pop. ulation and Development Review, 18, No. 1(March, 1992) pp. 129-146.
[3] Douglas L. Anderton:The Population of United States, New York, 1997, P349.
[4] 钟水映. 人口流动与社会经济发展研究. 武汉:武汉大学出版社, 2000, 69-72.
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