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Methods of Eradicating Buckthorn (rhamnus) Susceptible to Crown Rust (puccinia Coronata) of Oats
E. R. Van Leeuwen
Eloise Blaine Cram
George McMonies Hunt
Glen Blaine Ramsey
John Brown Cuno
Marinus Westveld
Perry Eugene Howard
Sherlock Melvin Dietz
Wilbur Magruder Hurst
Lysle Douglass Leach
Robert Henry Black
出版
U.S. Department of Agriculture
, 1930
URL
http://books.google.com.hk/books?id=JqeaAQAACAAJ&hl=&source=gbs_api