United States. General Accounting Office
Eric Schlosser
Scott Douglas Sagan
Hill, C. R.
Joel Larus
Stewart Britten
Hoffmann, Manfred Oberst d. R. Dr. sc. mil.
Brian Michael Jenkins
United States. Congress. House. Committee on Education and Labor. Subcommittee on Health and Safety
Andre Richardt
United States. Army. Corps of Engineers.
Unknown Author