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Estimated costs, returns and input requirements for selected crop and livestock enterprises in the burley tobacco area of Southwest Virginia
Givan, William D., (1968)
Changes in feed-grain production and livestock numbers in Michigan
Wright, K. T., (1956)
Economic instability and choices involving income and risk in livestock and poultry production
Brown, William G., (1955)
Sheep production : costs and returns in West Virginia
Barr, Alfred L., (1964)