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Fertilizer Experiments with Ten Market-garden Crops in Cook County, Illinois

其他書名	Spinach, Lettuce, Beets, Peas, Beans, Tomatoes, Peppers, Carrots, Potatoes, and Cauliflower
出版	University of Illinois Agricultural Experiment Station, 1933
URL	http://books.google.com.hk/books?id=gp9QAQAAMAAJ&hl=&source=gbs_api