@article {12188, title = {Contraction and Expansion: The Divergence of Private and Public Sector Unionism in the United States}, journal = {Journal of Economic Perspectives}, volume = {2}, number = {2}, year = {1988}, note = {Reprinted in 17 Samuel Estreicher and Stewart Schwab (eds) Foundations of Labor and Employment Law (NY: Oxford University Press, 2000).}, pages = {63-68}, author = {Richard Freeman} }