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Investigation in Erosion Control and the Reclamation of Eroded Land at the Missouri Valley Loess Conservation Experiment Station, Clarinda, Iowa, 1931-42

Charles Otis JohnstonCharles Stewart HoltonEaton Melroy SummersErnst ArtschwagerGeorge Marsden ByramJohn James WillamanRichard WeindlingGeorge Meredith JemisonHerman Alonzo RodenhiserLeroy Everett ComptonRobert Delafield RandsRoderick Koenig EskewElmer Walker BrandesRalph Merrill Caldwell

出版	U.S. Department of Agriculture, 1948
URL	http://books.google.com.hk/books?id=J0taAQAACAAJ&hl=&source=gbs_api