The Black Corridor
A list of foreign (i.e. non-English language) editions
Der Schwarze Korridor (Fischer, 3-436-01568-7, Germany, 1972)
Il Corridoio Nero (Casa Editrice La Tribuna, in Galassia No. 172, Italy, August 1972)
Emigranten Voor Utopia (Born, 90-283-0310-3, Netherlands, 1972)
A Fekete Folyosó (Kozmosz Könyvek, 9632111281, Hungary, 1976)
暗黒の廻廊 (Hayakawa, I.S.B.N. unknown, Japan, 1983)
Il Corridoio Nero (Mondadori, in Urania No. 133, Italy, February 2014)
Moorcography.org 