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Changes in Micronutrient Composition of the Herbage of Alfalfa, Medium Red Clover, Ladino Clover, and Bromegrass with Advance in Maturity

Bill R. BaumgardtGerald Milton LoperGordon Everett Van RiperJen Yu WangRoy Elwyn NicholsWillard Fritz Mueller

出版	Agricultural Experiment Station, University of Wisconsin, 1959
URL	http://books.google.com.hk/books?id=0IBRAQAAMAAJ&hl=&source=gbs_api