Friedmann, Wolfgang, 1907-1972
An introduction to world politics
Macmillan, 1951
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Soltau, Roger H.
An Introduction to politics
Longman, Green, 1951
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Soltau, Roger H.
An Introduction to politics
Longman, Green, 1960
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Kegley, Charles William, Jr.
World Politics : trend and transformation
Wadsworth, 2009
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Rourke, John T.
International politics on the world stage
McGraw-Hill, 2009
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