The Encyclopedia Americana : the international reference work, volume 2
Americana Corporation, 1960
Buku Referensi
The Encyclopedia Americana : the international reference work, volume 6
Americana Corporation, 1960
Buku Referensi
The Encyclopedia Americana : the international reference work, volume 7
Americana Corporation, 1960
Buku Referensi
The Encyclopedia Americana : the international reference work, volume 11
Americana Corporation, 1960
Buku Referensi
The Encyclopedia Americana : the international reference work, volume 12
Americana Corporation, 1960
Buku Referensi