7.5.24

Quercitron Bark
(CHAPTER VII. Flavonol Group.)
(Osa artikkelista)

The Natural Organic Colouring Matters By Arthur George Perkin, F.R.S., F.R.S.E., F.I.C., professor of colour chemistry and dyeing in the U...

4.5.24

Yellow Cedar
(CHAPTER VII. Flavonol Group.)

The Natural Organic Colouring Matters By Arthur George Perkin, F.R.S., F.R.S.E., F.I.C., professor of colour chemistry and dyeing in the U...