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Effect of Tillage Systems, Row Configuration-spacing and Plant Population on Soil Physical Properties, Evapotranspiration and Dryland Sorghum Yields

Jaime Roel Salinas-Garcia

出版	Texas A & M University, 1981
URL	http://books.google.com.hk/books?id=OurjNwAACAAJ&hl=&source=gbs_api