Wielenga, Friso. author
A history of the Netherlands : from the sixteenth century to the present day
Bloomsbury Academic, 2015
 Buku Teks SO
Gettell, Raymond G.
History of American political thought
Appleton-Century-Crofts, 1928
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Essays in the history of political thought
edited by Isaac Kramnick
[publisher not identified], 1969
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Wanlass, Lawrence C.
Gettell's history of political thought
Appleton-Century-Crofts, 1953
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Brecht, Arnold
Political theory: the foundations of twentieth-century political thought
Princenton University Press, 1968
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