http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Danh mục thuốc bảo vệ thực vật được phép, hạn chế và cấm sử dụng ở Việt Nam 2003
Bộ Nông nghiệp và phát triển nông thôn
Agricultural chemicals,Pesticides,Insecticides,Herbicides