Notes on the Origin of Copromacrinite Based on Nitrogen Functionalities and Delta C-13 and Delta N-15 Determined on Samples from the Peach Orchard Coal Bed, Southern Magoffin County, Kentucky
                        AuthID
P-00K-MC1
                
    P-00K-MC1
 
    
                     
    
                     
    
                     
                    