The Encyclopedia Americana : volume 24
Americana Corporation, 1964
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Collier's encyclopedia : volume 24
Macmillan Educational Company, 1990
Buku Referensi
The Encyclopedia Americana : volume 24
Grolier, 1994
Buku Referensi
The World book encyclopedia : volume 24
World Book, 1985
Buku Referensi
The Encyclopedia Americana : the international reference work, volume 24
Americana Corporation, 1960
Buku Referensi