The World book encyclopedia : volume 13
World Book, 1985
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The New Encyclopaedia Britannica : volume 13
Encyclopaedia Britannica Inc., 2003
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The New Encyclopaedia Britannica : volume 13
Encyclopaedia Britannica Inc., 1978
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The New Encyclopedia Britannica : volume 13
Encyclopedia Britannica, 1983
Buku Referensi
The New Encyclopaedia Britannica : volume 13
Encyclopaedia Britannica Inc., 1988
Buku Referensi