Takashi Kojima.  Foreword by Yoemon Yamazaki  Published by C E Tuttle & Co. 26th printing, 1972.  PB. 102 pages. 106 x 182mm.

A very good example, uncreased spine.

Ever watched a Chinese restaurant manager using an abacus and marvelled at his speed and dexterity, and wondered why he wasn't using a calculator ?  The answer is that the abacus can be just as fast.  This book tells you how to use one, includes problems and answers !