Druck und Derlag von Commercial Press, [date of publication not identified]
Buku Referensi
Holborn, Hajo, 1902-1969, author
R. Oldenbourg Verlag, 1970
Buku Teks
Buku Teks
Kupper, Heinz, author
Claassen Verlag, 1965
Buku Referensi
Kupper, Heinz, author
Claassen Verlag, 1965
Buku Referensi