The Encyclopedia Americana; Volume 4
Americana Corporation, 1964
Buku Referensi
The Encyclopedia Americana : the international reference work, volume 4
Americana Corporation, 1960
Buku Referensi
The Encyclopedia Americana : volume 4
Grolier, 1994
Buku Referensi
The Encyclopedia Americana : volume 3
Grolier, 1994
Buku Referensi
The Encyclopedia Americana : volume 5
Grolier, 1994
Buku Referensi