Affiliation: | Kelly:;Economist, Bureau of Economics, Federal Trade Commission, 600 Pennsylvania Avenue NW, Washington, DC 20580. Phone 1-202-326-3358, Fax 1-202-326-3443, E-mail Morkre:;Economist, Bureau of Economics, Federal Trade Commission, 600 Pennsylvania Avenue NW, Washington, DC 20580. Phone 1-202-326-3365, Fax 1-202-326-3443, E-mail |