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The County Agent
Gladys L. Baker
出版University of Chicago Press, 1939
主題Technology & Engineering / Agriculture / General
ISBN05989800249780598980021
URLhttp://books.google.com.hk/books?id=RjKvMAEACAAJ&hl=&source=gbs_api
註釋"This 'O-P' book is an authorized reprint of the original edition, produced by Microfilm-Xerox by University Microfilms, Inc., Ann Arbor, Michigan, 1959"--Page [v].