Yazar
Colin G Treworgy
10 cilt bulundu.
Colin G. Treworgy · Dept. of Natural Resources, Illinois State Geological Survey
54 sayfa · 2000
Coal mines and mining / Coal reserves
Colin G. Treworgy · Illinois State Geological Survey
65 sayfa · 1982
Coal mines and mining / Steenkool / Mijnbouw
Colin G. Treworgy · Illinois State Geological Survey
18 sayfa · 1991
Earth movements and building / Land use, Urban / Mine subsidences / Urban Land use
Colin G. Treworgy · Illinois Institute of Natural Resources, State Geological Survey Division
11 sayfa · 1981
Coal
Colin G. Treworgy · Illinois State Geological Survey
Sayfa sayısı yok · 1989
Mine subsidences / Property insurance
Colin G. Treworgy · Illinois State Geological Survey
43 sayfa · 1999
Coal mines and mining / Coal reserves
Colin G. Treworgy · Illinois State Geological Survey
93 sayfa · 1995
Coal / Mines and mineral resources
Colin G. Treworgy · Illinois State Geological Survey
105 sayfa · 1997
Coal / Mines and mineral resources
Colin G Treworgy · Dept. of Energy and Natural Resources, Illinois State Geological Survey
48 sayfa · 1994
Coal / Mines and mineral resources