Soil survey of Perry County, Illinois /
United States Department of Agriculture, Soil Conservation Service ; in cooperation with Illinois Agricultural Experiment Station.
[Washington, D.C.?] : The Service, 
> Perry County
Soil surveys > Illinois > Perry County.
Includes index to map units.
"Issued September 1988"--P. iii.
Shipping list no.: 88-634-P.
vii, 172 p., , 65 folded p. of plates :
ill., maps (some col.) ;
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