Table I. does not, therefore, claim to be anything more than a rough guide to the various types, whilst indicating the more ... Tortoiseshell. (c) Ivory. From animal sources ... (, /) Hone, (e) Various epidermic prepara- a#39; tions. /(a) Wood, cellulose. ... (fagt;) Derivatives of natural resins B. Derived from svnthi-tir raw materials.
|Title||:||The British Plastics Year Book|