Snyder, Louis L., author
Van Nostrand Reinhold, 1957
Buku Teks
edited by Helmut Arntz
Press and Information Office of the Federal Government, 1961
Buku Teks
Arntz, Helmut, author
Media Consulta, 1962
Buku Teks
Adenauer, Konrad
The Press and Information Office of the Federal Government, 1961
Buku Teks
Press and Information Office of the Federal Government, 1961
Buku Teks