Johnson, Paul E. American goverment : people, institutional and policies - 3ª ed. - Houghton Mifflin, 1994 - xxiii, 837 p. ISBN: 0-395-66714-3 Subjects--Topical Terms: E.U.A-POLÍTICA Y GOBIERNOE.U.A. ECONOMÍA Dewey Class. No.: 353.001 / J69a