Notes, Comments and Preliminary results Jan 20 2014 Kwok Tong Soo   The gains from external scale economies and comparative advantage   Abstract  Contact Information  Citation  Full Text  -  Note   Apr 19 2012 Kwok Tong Soo   The size and growth of state populations in the United States   Abstract  Contact Information  Citation  Full Text  -  Note   Oct 15 2010 Ching-Fu Chen and Kwok Tong Soo   Some university students are more equal than others: Efficiency evidence from England   Abstract  Contact Information  Citation  Full Text  -  Note   Jan 17 2008 Kwok Tong Soo   Trade volume and country size in the Heckscher-Ohlin model   Abstract  Contact Information  Citation  Full Text  -  Note