M. D. Hall | Department of Earth Resources, Colorado State University, Fort Collins, CO 80523, USA
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| Respectively, Project Engineer, CH2M‐Hill, 2525 Airpark Drive, Redding, California 96049; Soil Scientist, USDA‐ARS, Great Plains Systems Research Unit, P.O. Box E, Fort Collins, Colorado 80522; Water Quality Specialist, Colorado State University Cooperative Extension, Colorado State University, Fort Collins, Colorado 80523; Soil Scientist, USDA‐ARS, Soil‐Plant‐Nutrient Research Unit, P.O. Box E, Fort Collins, Colorado 80522 (E‐Mail/Hall: mhall@ch2m.com).
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