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Technical Bulletin

David Carleton NealEarly C. EwingHarry Bates BrownHarry Willis AllenHerbert Lawrence DozierMaulsby Willett Blackman

出版	Mississippi Agricultural Experiment Station, 1918
URL	http://books.google.com.hk/books?id=Zt1PAQAAMAAJ&hl=&source=gbs_api