共 50 条
- [31] Notes on the structure of Pennsylvanian plants from illinois. II BOTANICAL GAZETTE, 1928, 85 (1-4): : 74 - U41
- [33] ISOTOPIC STUDIES OF THE NATURAL SOURCES OF RADIUM IN GROUNDWATER IN ILLINOIS. Research Report - University of Illinois at Urbana-Champaign, Water Resources Center, 1984,
- [35] Black carbon measurements made with an aethalometer in Chicago, Illinois. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2002, 223 : U225 - U225
- [40] TROUBLESOME ROADLESS AREA, KENTUCKY. Geological Survey Professional Paper (United States), 1984, 2 : 615 - 617