The Encyclopedia Americana : the international reference work, volume 11
Americana Corporation, 1960
Buku Referensi
The Encyclopedia Americana : the international reference work, volume 14
Americana Corporation, 1960
Buku Referensi
The Encyclopedia Americana : the international reference work, volume 17
Americana Corporation, 1960
Buku Referensi
The Encyclopedia Americana : the international reference work, volume 20
Americana Corporation, 1960
Buku Referensi
The Encyclopedia Americana : the international reference work, volume 23
Americana Corporation, 1960
Buku Referensi