Pohl, Hans.
Die chemische Industrie in den Rheinlanden während der industriellen Revolution / Hans Pohl, Ralf Schaumann, Frauke Schönert-Röhlk.
Wiesbaden : F. Steiner, 1983-
Includes bibliographies.
v. 1. Die Farbenindustrie.
Chemical industry -- Germany -- North Rhine-Westphalia.
Chemical industry -- Germany -- History.
Shaumann, Ralf.
Schönert-Röhlk, Frauke.
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