http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Giáo trình nguồn gốc phân loại khảo sát lập bản đồ đất
Sách có danh mục tài liệu tham khảo
Võ Quang Minh (chủ biên); Lê Quang Trí ... [et al.]
Thực tập giáo trình,Phân loại lập bản đồ đất,Thực tập giáo trình
Phân loại đất,Soils classification,Soils science