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Dong Cheng
Union College
 
807 Union Street
Schenectady, NY 12308
USA
 
chengd@union.edu
 
https://sites.google.com/site/chengdongvanderbilt/
 
 
 
 
 
JEL Areas:
N7 : Economic History: Transport, International and Domestic Trade, Energy, Technology, and Other Services: General, International, or Comparative
O3 : Technological Change; Research and Development: General