Heinz Mehlhorn, editor
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eBooks
Jeffrey, H.C., author
EGC, 1983
Buku Teks
R. Heru Prasetyo, author
Airlangga University Press, 2004
Buku Teks
Purba, Antonius Sima, author
2001
UI - Tesis (Membership)
Jeffrey, H.C., author
E. & S. Livingstone, 1968
Buku Referensi