http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Overview of Plant Protection and Quarantine's Professional Development Center
Animal and Plant Health Inspection Service.
Plant Protection and Quarantine Programs.
1 online resource (25 pages) : color illustrations
Title from title screen (viewed on Oct. 5, 2011).
Program aid (United States. Department of Agriculture) ; no. 1990