TY - RPRT TI - Chemical analyses of surface water in Illinois, 1975-77--Volume II, Illinois River basin and Mississippi River tributaries north of Illinois River basin AU - David Grason AU - R. W. Healy PY - 1979 DO - 10.3133/wri7924 UR - https://pubs.usgs.gov/publication/wri7924 ID - wri7924 ER -