United States. General Accounting Office
United States. Congress. Senate. Committee on Education and Labor.
Unknown Author
United States. Congress. Senate. Committee on Agriculture and Forestry
Jan Gehl
Michigan. Office of the Auditor General.
United States. General Accounting Office. Accounting and Information Management Division
Geraint John
United States Department of War
Scotland. Parliament.
Toba Schwaber Kerson
Karen Backus
Stephen Verderber