Ovid
United States. General Accounting Office
United States. Bureau of the Census
Anton O. Kris
European Economic Community.
Svetlin Nakov
Emile Benoit
Christopher Bollas
Stow Persons
Michael Daniels
Great Britain. Central Office of Information. Reference Division.
Barnaby B. Barratt
European Free Trade Association.
European Free Trade Association
Miriam Camps
Costa Rica. Ministerio de Comercio Exterior