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Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

Volume 31, Number 403 (1953) Economics of some soil conservation practices

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Economics of some soil conservation practices
P. E. Johnston, Lynn S. Robertson, Earl O. Heady, J. A. Hodges, Glenn Johnson, Karl Wright, George A. Pond, O. R. Johnson, A. W. Epp, Cecil B. Haver, J. I. Falconer, Russell Berry, and P. E. McNall