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Buku Teks
Bishop, Yvonne M.M.
MIT Press, 1975
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Siregar, Fillipi Rodo Tua
Fakultas Teknik Universitas Indonesia, 2020
UI - Skripsi (Membership)
Arnold, Steven F.
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Buku Teks
Raykov, Tenko
Routledge, Taylor & Francis Group, 2008
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