International Society of Soil Science
Хөдөө аж ахуйн шинжлэх ухаан
Газар тариалан, ой, загас агнуур
Хөрс судлал
IUSS Working Group WRB. World Reference Base for Soil Resources 2014. International soil classification system for naming soils and creating legends for soil maps. FAO, Rome.
