Author:

Phillips,T.L.;Avcin,M.J.;Berggren,D.

Year:

1976

Title:

Fossil Peat from the Illinois Basin. A guide to the study of coal balls of Pennsylvanian age.

Reference:

Phillips,T.L. et al. (1976) Fossil Peat from the Illinois Basin. A guide to the study of coal balls of Pennsylvanian age. Illinois State Geological Survey, Educational Series ii (Urbana) # 11 P. 1- 39

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