`Durisol` is also a trade name for a type of cement-bonded wood fiber. In the FAO World Reference Base for Soil Resources, a durisol is a very shallow to moderately deep, free-draining soil of arid and semi-arid environments, that contains cemented secondary silica (SiO2) in the upper metre of soil. Durisols are internationally known as `hardpa......
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http://en.wikipedia.org/wiki/Durisol
one of the 30 soil groups in the classification system of the Food and Agriculture Organization (FAO). Durisols are soils in semiarid environments ...
Found on
http://www.britannica.com/eb/a-z/d/85
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