alten Zechen ander Ruhr
By: Wilhelm und Gertrude Hermann.
Contributors: Hermann, Gertrude.
Edition: (2. Aufl.).
Series: Die Blauen Bücher
Publisher: Langewiesche
Published: 1982
Place of publication: Königstein im Taunus
Language: ger
Number of pages: 133
Subjects: Coal mines and mining -- Germany (West) -- Ruhr Region.
Notes: Bibliography, p. 133.