Sixth edition. 284pp, with diagrams etc in text. Blue cloth-covered boards with black lettering and decoration front and spine. 12mo. Cloth is unevenly faded, especially over spine, rubbed and rounded at corners and spine ends. Some mild spotting on text block edges. Previous owner's stamp on the front free endpaper else internally neat, clean and tight. In its original paper dust wrapper, worn, toned, chapped around edges, browned to brittle over spine.
A H Russell, author of the Mathe-magician, teaches how to make rapid mental arithmetic calculations.
