scholarly journals The U.S. Geological Survey coal quality (COALQUAL) database version 3.0

Data Series ◽  
10.3133/ds975 ◽  
2015 ◽  
Author(s):  
Curtis A. Palmer ◽  
Charles L. Oman ◽  
Andy J. Park ◽  
James A. Luppens
Keyword(s):  
Geological Survey ◽  
Coal Quality ◽  
The U.S

scholarly journals The U.S. Geological Survey coal quality data base (COALQUAL)

1994 ◽  
Author(s):  
R.B. Finkelman ◽  
C.L. Oman ◽  
L.J. Bragg ◽  
S.J. Tewalt
Keyword(s):  
Data Base ◽  
Geological Survey ◽  
Quality Data ◽  
Coal Quality ◽  
The U.S
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