Regionalverband Ruhr. (2017). Route industrielkultur (1a. ed.). Regionalverband Ruhr.
Tohutoru Kātū Chicago (17th ed.)Regionalverband Ruhr. Route Industrielkultur. 1a. ed. s.l: Regionalverband Ruhr, 2017.
Tohutoro MLA (9th ed.)Regionalverband Ruhr. Route Industrielkultur. 1a. ed. Regionalverband Ruhr, 2017.
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