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UI - Skripsi (Open)
Seiberling, Frank, author
A Holt-Dryden Book, 1959
Buku Teks
Astrianto Adianggoro, author
Universitas Indonesia, 2007
UI - Skripsi (Membership)
Cothey, A.L.
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Buku Teks
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Gramedia Purtaka Utama, 2001
Buku Teks