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South Dakota Corn Performance Tests, 1945
C. R. Hoglund
Claire C. Totman
Clifford J. Franzke
Gerald Smith Harshfield
Karl Ferdinand Manke
Lillian O. Lund
S. A. McCrory
出版
Agricultural Experiment Station, South Dakota State College
, 1945
URL
http://books.google.com.hk/books?id=PtNPAQAAMAAJ&hl=&source=gbs_api