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process for the preparation of a class of dyes derived from monoalcossi.monoaminotriarilme tano and compounds so obtained eprocedimento for the production of photographic material with filter distrati and antialonici through use of colouring matters referred to in this trovato.
process for the preparation of a class of dyes derived from monoalcossi.monoaminotriarilme tano and compounds so obtained eprocedimento for the production of photographic material with filter distrati and antialonici through use of colouring matters referred to in this trovato.