Delwedd:Erosion.jpg

Oddi wrth Wicipedia, y gwyddoniadur rhydd.

Gall y ffeil hon gael ei defnyddio gan nifer o brosiectau eraill.

Description: Severe soil erosion in a wheat field near Washington State University

Source: http://www.ars.usda.gov/is/graphics/photos/k5951-1.htm

Date: Unknown

Author: Jack Dykinga

License: public domain


Public domain This image is in the public domain because it contains materials that originally came from the Agricultural Research Service, the research agency of the United States Department of Agriculture.

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