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Soil Survey of Portage County, Wisconsin
Andrew Robeson Whitson
Warren Jacob Geib
Guy Woolard Conrey
Horace Valentine Geib
Theodore J. Dunnewald
Clinton B. Post
Lewis P. Hanson
W. C. Boardman
Arthur Elijah Taylor
Lee Roy Adolph Schoenmann
Carl Thompson
J. B. R. Dickey
出版
State
, 1918
URL
http://books.google.com.hk/books?id=HHMiAQAAMAAJ&hl=&source=gbs_api