- Publication venue
- Iowa State University. Department of Agronomy.
- Publication date
- 01/01/1967
- Field of study
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- Publication venue
- Publication date
- 01/01/1990
- Field of study
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- Publication venue
- Publication date
- 01/01/1989
- Field of study
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- Publication venue
- Tokyo University Press
- Publication date
- 01/01/2002
- Field of study
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- Publication venue
- 'Soil Science Society of America'
- Publication date
- Field of study
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- Publication venue
- 'Informa UK Limited'
- Publication date
- Field of study
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