… and horn-cores, unworked, defatted, simply prepared (but not cut to shape), treated with acid or degelatinised; …
Explanatory notes
… and horn-cores, unworked, defatted, simply prepared (but not cut to shape), treated with acid or degelatinised; … by various processes). (2) Bones, simply prepared (but not cut to shape) , i.e., not having undergone processes extending beyond simple …