"Talk before the midwinter conference of the Food Marketing Institute, Miami, Florida, January 24, 1979."

Includes bibliographical references (p. 11-12).

"February, 1987." "CISR WP #" incorrectly added to t.p. per telephone call to CISR Office, MIT. -- Not part of their series. "Text of a talk given at the International Conference on Information Systems, San Diego, CA, December 15, 1986 (Revised 2/15/87)"--P. [5]