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Donald E. Campbell
The College of William and Mary
 
PO Box 8795
Williamsburg, VA 23187-8795
USA
 
decamp@wm.edu
 
http://www.wm.edu/as/economics/faculty/directory/campbell_d.php
 
 
 
 
 
JEL Areas:
C : Mathematical and Quantitative Methods
C0 : Mathematical and Quantitative Methods: General