Purba, Radiks
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Buku Teks
Tina Sarah Herawaty
Universitas Indonesia, 2010
UI - Skripsi (Open)
Brown, Robert H.
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Buku Teks
Mullins, Hugh A.
Cornell maritime Press, 1959
Buku Teks
Koh, Soon Kwang, Peter
Longmans, 1989
Buku Teks