Details: 166 p. 7"/18 cm. Frontispiece. 8 b&w plates. Photos of Aynsome Laboratories. Hardcover. Tear in right edge of spine, faint stain to cover. Fore-edge spotted. Chapters on chemist training, soils and lubrications, the purchase of coals and oil fuel, moisture in wheat and flour, enrichment processes, breakfast, invalid and infant food, feeding stuffs and mill offals.