Apter, David E.
Introduction to political analysis
Winthrop, 1977
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Contempoarary political analysis
edited by James C. Charlesworth
The Free Press, 1968
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Lasswell, Harold D.
The Analysis of political behaviour an empirical approach
Routledge & Kegan Paul Ltd., 1949
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The political
edited by David Ingram
Blackwell , 2002
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Easton, David
A systems analysis of political life
John Wiley & Sons, 1965
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