France. Conseil économique et social.
Portugal.
United States. Congress. Joint Committee on Internal Revenue Taxation.
United States. Dept. of the Treasury.
Arthur D. Little, Inc.
Alexia Lewnes
Portugal
Emanuel Leser
Nonna A Noto
Živ. St Devečerski
E. van Voorthuijsen
Bruce R. Bolnick
John Farthing
Canada. Dept. of Finance.
Unknown Author
Bulgaria.
Thompson Westcott