TY - BOOK AU - Groschen,George E. ED - United States ED - United States. TI - Water quality in the Lower Illinois River Basin, 1995-98 SN - 060795423X U1 - 363.73942097735 21st ed. PY - 2000///]. CY - [Reston, Virginia]: PB - [U. S. Geological Survey], , [U. S. Department of the Interior] KW - Water quality KW - Illinois River Watershed N1 - Includes bibliographical references (p. 28-29) ER -