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Hepler, P., et al. Field appraisal of resource management systems FARMS : Crop yield and quality relationships with soil erosion - 1982. Orono: 1985 21 p. : tab.
Hepler, P., et al. (1985) Field appraisal of resource management systems FARMS : Crop yield and quality relationships with soil erosion - 1982, Orono: 21 p. : tab.
Hepler, P., & et al. (1985). Field appraisal of resource management systems FARMS : Crop yield and quality relationships with soil erosion - 1982. Orono: 21 p. : tab.
Hepler P, et A. Field appraisal of resource management systems FARMS : Crop yield and quality relationships with soil erosion - 1982. Orono: 1985. p. 21 p. : tab.
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