A stable carbon isotope and biological marker study of Polish bituminous coals and carbonaceous shales

2003 ◽  
Vol 55 (2-4) ◽  
pp. 73-94 ◽  
Author(s):  
Maciej J. Kotarba ◽  
Jerry L. Clayton
Ecology ◽  
1986 ◽  
Vol 67 (4) ◽  
pp. 1002-1010 ◽  
Author(s):  
Steven W. Leavitt ◽  
Austin Long

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