2Davidson. E. H. etal. Time- Income series Econometric Modeling of the Aggregate Relationship Between Consumers Expenditure and in the United Kingdom[J ].Economic Journal, 1998 (80) :205 - 227.
3Lammas. Prem. S. Wealth Income and Consumption in a Developing Economy [ J ]. Journal of Macroeconomics. Vol. 14. No2. Spring, 1992.
4Harvard. American Agriculture in the Twentieth Century [ J ]. Harvard University Press, 2006:234 - 245.
5Holly R. Baucus. Urban -rural Migration in the USA : An Analysis of Residential Satisfaction [ J ]. Regional Studies, 2004, 38 (6) :643 - 657.
6William. P. Brolone. The Failure of National Rural Policy [ J ]. Georgetown University Press, 2006 (7) :123 - 156.