Soil survey of De Kalb County, Illinois / United States Department of Agriculture, National Resources Conservation Service ; in cooperation with Illinois Agricultural Experiment Station.

[Washington, D.C.] : U.S. Dept. of Agriculture, Natural Resources Conservation Service, [2004]

1 case (1 v., [33] folded p. of plates) : ill., maps (some col.) ; 31 cm.

Also available via Internet from USDA web site. Address as of 2/23/05: http://soils.usda.gov/survey/online%5Fsurveys/illinois/dekalb/man.pdf; current access available via PURL.

English

February 17, 2005

Includes bibliographical references (p. 123-124) and index to map sheets.