http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
a stakeholder review of the APHIS-PPQ safeguarding system
Animal and Plant Health Inspection Service.
xxxiv, 133 pages, 51 unnumbered pages : illustrations ; 28 cm.
conducted by the National Plant Board (NPB) at the request of the United States Department of Agriculture, Animal and Plant Health Inspection Service, Plant Protection and Quarantine (USDA-APHIS-PPQ).