Soil survey of Humboldt County, Iowa
By: [report by Ellsworth M. Richlen... et al.] ; United States Department of Agriculture, Soil Conservation Service, in cooperation with Iowa Agricultural Experiment Station
Contributors: United States. Soil Conservation Service; Iowa Agriculture and Home Economics Experiment Station
Series: Soil survey -- ser. 1956, no. 18
Publisher: The Service
Published: 1961
Place of publication: [Washington, D.C.?]
Language: eng
Number of pages: 71
Subjects: Soils -- Iowa -- Humboldt County -- Maps; Soil surveys -- Iowa -- Polk County
Genres: Maps
Other titles: Soil survey, Humboldt County, Iowa; Humboldt County, Iowa
Notes: "Soil survey of Humboldt County, Iowa."--p. 1 (booklet)

"Issued January 1961."

Includes map index