O. A. WITTE
Chief Engineer, American Bureau of Engineering, Inc.
Third Edition
Completely Revised and Enlarged
Fourth Impression
Published 1922 by
THE AMERICAN BUREAU OF ENGINEERING, INC. CHICAGO, ILLINOIS, U. S. A.
Copyright, 1918, 1919, 1920, and 1922, by
American Bureau of Engineering, Inc.
All Rights Reserved.