[Washington, D.C.] : U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service ; [Springfield, Va. :] : [National Technical Information Service, distributor], [1999]
Also available via Internet from the APHIS web site (PDF file only). Address as of 9-13-00: http://www.aphis.usda.gov/oa/pubs/corsym/symposiu.html; current access is available via PURL.
Microfiche. [Washington, D.C.] : Supt. of Docs., U.S. G.P.O., 2000 2 microfiches : negative.