Christensen, George C.
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referencedIn | Heady, Earl O. (Earl Orel), 1916-1986. Papers, 1943-1987. | Iowa State University, Parks Library | |
creatorOf | Christensen, George C. Descriptive accounts of agricultural inventions and of the business cycle, 1940. | Library of Congress |
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associatedWith | Heady, Earl O. (Earl Orel), 1916-1986. | person |
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Agricultural inventions |
Business cycles |
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Person