Profiles in the History of the U.S. Soil Survey
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15
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H-INDEX
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Published By Iowa State Press
9780470376959, 9780813827599
2008 ◽
pp. 303-313
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2008 ◽
pp. 327-331
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2008 ◽
pp. 233-274
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2008 ◽
pp. 275-302
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