Colin V. Sowter
Charles S. Sodano
Unknown Author
United Nations. Economic and Social Commission for Asia and the Pacific.
Norbert Preuß
Richard Weingardt
Canada. Industry, Science and Technology Canada.
Association of Consulting Engineers.
William B. Foxhall
Howard G. Birnberg
American Society of Civil Engineers. Task Committee on the Revision of Manual No. 45.
Reginald Bidgood
Denmark. Monopoltilsynet.
Peter M. Hartley
United Nations. Economic Commission for Latin America