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Application of the benzidine colours in all branches of printing (1898)
Farbenfabriken Bayer Aktiengesellschaft · Elberfeld · leaf 82
Dyed with: 3% Congo Orange G;discharged with: tin crystals discbarge. … Dyed with : 4 % Benzo Purpurine 4 B ;discharged with : tin crystals discharge.Textile fabrics · Dyes and dyeing
Internet Archive · Clark Art Institute Library · Public Domain Mark 1.0. Free to use for anything.
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