"This report was prepared by Mathematica Policy Research, Inc., under a research contract with the Economic Research Service"--P. [i].
"Food Assistance & Nutrition Research Program."
"April 2003"--P. [i].
Includes bibliographical references (page 16).
Also available via Internet from the ERS web site. Address as of 6/2/03: http://www.ers.usda.gov/publications/fanrr30/fanrr30.pdf; current access is available via PURL.