Not distributed to depository libraries in a physical form.
"April 2000."
"GAO/NSIAD-00-85."
"B-284585"--P. 3.
Includes bibliographical references.
Available via Internet from the GPO Access web site. Address as of 1/29/2001: http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=gao&docid=f:ns00085.pdf; current access is available via PURL.