Dyebook inscribed: Badische anilin - & soda-fabrik ludwigahafen/Rheine "The Indanthrene Dyestuffs; indanthrene, flavanthrene, melanthrene, cyananthrene, 1906.
Dyebook inscribed: Badische anilin - & soda-fabrik ludwigahafen/Rheine "The Indanthrene Dyestuffs; indanthrene, flavanthrene, melanthrene, cyananthrene, 1906.