Heady, Earl O.
Agricultural production functions / Earl O. Heady and John L. Dillon
Iowa State University , 1969
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Heady, Earl O.
Economics of agricultural production and resource use / Earl O. Heady
Prentice-Hall, 1952
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Hopkins, John A.
Farm records and accounting /John A. Hopkins, Earl O. Heady
Iowa State University Press, 1962
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Capital and credit needs in a changing agriculture / edited by E.L. Baum, Howard G. Diesslin and Earl O. Heady
Iowa Iowa State University Press , 1961
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Hirschman, Albert O., editor
The strategy of economic development / Albert O. Hirschman
Yale University Press, 1965
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