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The Effect of Certain Methods of Soil Treatment Upon the Corn Crop

Albert Theodore PetersFred Wallace CardThomas Lyttleton LyonUniversity of Nebraska (Lincoln campus). Agricultural Experiment Station

出版	University of Nebraska, Agricultural Experiment Station of Nebraska, 1897
URL	http://books.google.com.hk/books?id=SOlQAQAAMAAJ&hl=&source=gbs_api