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Demaris, Philip J.

Formation and distribution of coal balls in the Herrin Coal (Pennsylvanian), Franklin County, Illinois Basin, USA - London Geological Society of London January 2000 - pp. 221-228 ilus., tbl.

ISSN: 0016-7649

Subjects--Topical Terms:
AMBIENTE DE AGUA DULCE
BOLA DE CARBON
CONCRECION
SALIDA DE GAS

Subjects--Geographic Terms:
ESTADOS UNIDOS
ILLINOIS