Thomas Leithch and Lelan Poague
Wiley-Blackwell, 2011
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Pomerance, Murray, author
Polity Press, 2013
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Irca Adelonika, author
2017
UI - Skripsi (Membership)
Woodbury, Richard B.
Columbia University Press, 1973
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Whitehead, Alfred North, 1861-1947, author
Mentor Books , 1954
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