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Grundlegende Operationen der Farbenchemie (1920)
Fierz-David, Hans Eduard, 1882- · Zürich Schulthess · leaf 213
^. ^ o Ä a CO m ZI: ■S] r^ J3 ^ et ^ > IS rt X) » ^ O ^ 03 tiS O oDyes and dyeing
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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