One thousand metres down
Subtitle: true adventures under the earth
By: [by] Jean Cadoux and others.
Contributors: Cadoux, Jean, 1930-
Publisher: Barnes
Published: 1957
Place of publication: New York
Language: eng
Number of pages: 178
Subjects: Caves -- France -- Sassenage.; Gouffre Berger.
Notes: Translation of Opération-1000.