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1[Lafayette, Ind. : Purdue University, Agricultural Extension Service.1 online resource (no.) : ill.主题: “...Agricultural engineering....”
Center for Research Libraries: no.1-69 (Apr 1944-Jan 1967)
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2West Lafayette, IN : Purdue University, Cooperative Extension Service.Also issued in print.主题: “...Agricultural engineering Indiana....”
Center for Research Libraries: no.70-119
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