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Soil Survey of Crawford County, Michigan

Alfred Conrad AndersonArthur T. SweetEdmund Wilhelm KnobelJames Frank StroudJohn Alexander KerrJohn Ambrose ElwellRobert WildermuthSamuel Oscar PerkinsSamuel Williams PhillipsWilliam Edgar TharpAlwin William GokeHoward Barr WinantJ. T. WhetzelJohn F. FonderJohn N. SpencerR. H. DavisRalph Emanuel BlaneyW. H. MooreWarren Jacob GeibWendell William StrikeBlonnie Hugh WilliamsEdgar Malcolm JonesGeorge Henry DrewesH. W. HigbeeHarold Haight HullAlfred H. PaschallE. P. LoweMerritt WhitsonJohn Gordon SteeleW. J. Moran

出版	U.S. Government Printing Office, 1927
URL	http://books.google.com.hk/books?id=xJVVzgEACAAJ&hl=&source=gbs_api