首页>
外国专利>
process for the manufacture of gerbbildern, e.g. for collotype, gelatinepapierumdruck by einstaeuben of writings by gerbender powder and aufquetschen on wet gelatineschichten
process for the manufacture of gerbbildern, e.g. for collotype, gelatinepapierumdruck by einstaeuben of writings by gerbender powder and aufquetschen on wet gelatineschichten
