@article{274869, note = {"By Dale E. Calsyn"--P. 11 of pt. 1..}, author = {Calsyn, Dale E.}, url = {http://library.usi.edu/record/274869}, title = {Soil survey of Du Page County, Illinois /}, publisher = {Natural Resources Conservation Service,}, recid = {274869}, pages = {1 case (2 pts., [2], 37 unbound folded p. of plates) :}, address = {[Washington, D.C.?] :}, year = {2001}, }