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Fiftieth Annual Report of the Ohio Agricultural Experiment Station for the Year Ended June 30, 1931
Donald Comin
Edward A. Silver
Harold Lamont Borst
Hughina McKay
John F. Dowler
Leonard Jay Alexander
Ohio Agricultural Experiment Station
Ralph W. Sherman
Philip Garrett Beck
出版
Ohio Agricultural Experiment Station
, 1931
URL
http://books.google.com.hk/books?id=u8xPAQAAMAAJ&hl=&source=gbs_api