Die Wollfarbstoffe des Jahres 1913 (1913)

Bayer Company, Inc. · Bayer Company, Inc. · leaf 30

Dyes and dyeing · Dyes and dyeing -- Wool · Farbenfabriken vorm. Friedrich Bayer & Co · Bayer Company, Inc

Science History Institute · Courtesy of Science History Institute · Public Domain Mark 1.0 (public domain). Free to use for anything.

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