The World book encyclopedia : volume 1
World Book, 1985
Buku Referensi
The World book encyclopedia
World Book, 1992
Buku Referensi
The World book encyclopedia : volume 16, S
Field Enterprises Educational Corporation, 1963
Buku Referensi
The World book encyclopedia : volume 17, T
Field Enterprises Educational Corporation, 1963
Buku Referensi
The World book encyclopedia : volume 2
World Book, 1985
Buku Referensi