File:Soil survey 1923.jpg
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:48, 1 July 2006 | 943 × 524 (70 KB) | Paleorthid | {{Information |Description= Early soil mappers |Source= from a Report of Bureau of Soils, U.S. Department of Agriculture, 1923 |Date= 1923 |Author= USDA |Permission= {{PD-USGov-USDA}} |other_versions= http://www.nv.nrcs.usda.gov/images/SoilHistory.pdf }} |
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