The Encyclopedia Americana : volume 3
Americana Corporation, 1964
Buku Referensi
Collier's encyclopedia : volume 3
Macmillan Educational Company, 1990
Buku Referensi
Encyclopedia of knowledge : volume 3
Grolier Incorporated, 1991
Buku Referensi
The Encyclopedia Americana : volume 3
Grolier, 1994
Buku Referensi
The New Encyclopedia Britannica : volume 3
Encyclopedia Britannica, 1983
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