Mode of access: Internet at the USDA web site. Address as of 6/25/03: http://usda.mannlib.cornell.edu/reports/nassr/poultry/pth-bbt/; current access is available via PURL.
Mode of access: E-mail from NASS. Address as of 6/25/03: http://usda.mannlib.cornell.edu/ess%5Fnetid.html; current access is available via PURL.