Includes bibliographical references (pages 49-52).
Also available via Internet from the GPO Access web site. Address as of 01/08/02: http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=gao&docid=f:ns99017.pdf; current access is available via PURL.
Microfiche. [Washington, D.C.] : U.S. General Accounting Office, [1999?] 1 microfiche : negative.