Der Nürnberger Trichter.
Subtitle: Lernmaschinen für Ihr Kind? (Textzeichnungen von Walter Söllner)
Series: Kosmos-Bibliothek,; Bd. 250
Publisher: Franckh
Published: 1966
Place of publication: Stuttgart
Language: ger
Number of pages: 84
Subjects: Teaching machines.
Notes: Bibliography: p. 82.