Soil survey of Clay County, Illinois
By: United States Department of Agriculture, Natural Resources Conservation Service ; in cooperation with the Illinois Agricultural Experiment Station
Publisher: The Service
Published: 1998
Place of publication: Washington, D.C.?]
Language: eng
Number of pages: 181
Subjects: Soil surveys; Soils; Maps
Notes: Cover title.

Includes bibliographical references (p. 117-118).