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Buku Teks
Foster, Louis O., author
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Buku Teks
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W. Heffer & Sons, 1972
Buku Teks
Thomsett, Michael C., author
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eBooks
Iwan Riswanto, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2003
UI - Tesis (Membership)