208 pages. Smooth-Paperback system. Olympus Optical Co., Ltd. C240E-1985 Printed in Japan. "...This OLYMPUS OM SYSTEM LENS HANDBOOK was compiled with two aims. On the one hand it puts a comprehensive knowledge of all the OM System lenses at your fingertips; on the other, it will serve as a lively companion in your adventures around the world of photography..." (from book by Olympus Optical Company Limited)