- United States Government Publishing Office (GPO)
- [Iowa City, Iowa] : University of Iowa, Libraries, Government Publications Department
Originally published in 1991. This digital image has passed into the public domain and may be copied and distributed without restriction.
- United States
- Pursuant to Title 17 Section 105 of the United States Code, this file is not subject to copyright protection and is in the public domain. For more information please see http://www.gpo.gov/help/index.html#public_domain_copyright_notice.htm