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Agricultural, Botanical, and Chemical Results of Experiments on the Mixed Herbage of Permanent Meadow, Conducted for More Than Twenty Years in Succession on the Same Land: The botanical results

John Bennet Lawes

出版	Royal Society of London, 1880
URL	http://books.google.com.hk/books?id=vU7jzAEACAAJ&hl=&source=gbs_api