发布于2009年12月9日 由胡景北经济发展文论2009年第5期 Jingbei HU: Intersectoral Migration of Agricultural Labor Force and Business Cycles i 经济发展文论2009年第5期 Jingbei HU: Intersectoral Migration of Agricultural Labor Force and Business Cycles in Developing Countries (3rd versioin, January 2011) 2nd version,March 2010 1st version,November 2009