Description
Item Description:Title from title screen (viewed on June 9, 2011).
"October 1978."
"Partially supported by the Advanced Mail Systems Directorate of the U.S. Postal Service ... under agreement number 104230-78-T-0681"--P. iii.
Electronic resource.
Physical Description:1 online resource (vii, 42 pages) : illustrations
Bibliography:Includes bibliographical references.