Our American government / U.S. Government
U.S. Goverment, 2003
 Buku Teks SO
Sayre, Wallace S.
American government
Barnes & Noble, 1964
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Posey, Rollin Bennett
American government
Littlefield, Adam, 1958
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Griffith, Ernest S.
The American system of government
Frederick A. Praeger, 1954
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Ferguson, John H.
The American system of government
McGraw-Hill, 1947
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