TY - BOOK AU - Mills,Patrick C. AU - Healy,R.W. ED - United States TI - Water and tritium movement through the unsaturated zone at a low-level radioactive-waste disposal site near Sheffield, Illinois, 1981-85 U1 - 628.168509773 20th ed. PY - 1993///]. CY - [Washington]: PB - [United States Government Printing Office], KW - Radioactive waste disposal in the ground KW - Environmental aspects KW - Illinois KW - Sheffield Region KW - Groundwater flow KW - Radioisotopes KW - Migration KW - Tritium KW - Hazardous waste sites KW - Zone of aeration N1 - Includes bibliographical references (p. 70-72) ER -