O`Connor, Robert E.
Politics and Structure: essentials of American National Government
Brooks/Cole, 1982
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Janda, Kenneth
The challenge of democracy : American government in global politics : essentials edition
Cengage Learning, 2012
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Schmidt, Steffen W.
American Government & politics today
Wadsworth, 2009
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American politics and government
edited by Stephen K. Bailey
United States Information Agency, 1973
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The politics of American government
Stephen J. Wayne [et all.]
Thomson, 2005
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