World Reference Base for Soil Resources

International soil classification system / From Wikipedia, the free encyclopedia

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The World Reference Base for Soil Resources (WRB) is an international soil classification system for naming soils and creating legends for soil maps. The currently valid version is the fourth edition 2022.[1] It is edited by a working group of the International Union of Soil Sciences (IUSS).

WRB%2C_4th_edition%2C_Cover.jpg
WRB, 4th edition (2022)

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