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Impacts of Slow Release Phosphorus and Urea on Intensively and Moderately Grazed Mixed-grass Prairie and Impacts of Rotational Grazing, Intensive Season-long Grazing, and Idle Land Use on Soil Health in the Missouri Couteau

Jay Michael Volk

出版	North Dakota State University, 2006
URL	http://books.google.com.hk/books?id=NVF2NwAACAAJ&hl=&source=gbs_api