| http://www.w3.org/ns/prov#value | - Preferred possible naturally occurring organic substances and products obtained therefrom are, in this case, wood flour, lignin powder, lignin-sulphonic acids, ammonified lignin-sulphonic acids, humus, humic acids, ammonified humic acids, peat, proteins and degradation products, for example hydrolysis products, of yeasts, algal material (alginates), polypeptides, such as wool and gelatin, fish-mea
|
