Title from title screen (viewed on May 27, 2003)., "June 1994.", and "OTA-BP-ETI-129."
Includes bibliographical references.
Also available via CD-ROM.
System requirements: Adobe Acrobat Reader. and Mode of access: Internet from the UNT Cybercemetery web site. Address as of 5/27/2003: http://govinfo.library.unt.edu/ota/Ota%5f1/DATA/19 94/9423.PDF; current access available via PURL.