Author:

Willard,D.A.

Year:

1993

Title:

Vegetational patterns in the Springfield Coal (Middle Pennsylvanian, Illinois Basin): Comparison of miospore and coal-ball record. (In: Modern and Ancient Coal Forming Environments. J.C.Cobb and C.B.Cecil, editors)

Reference:

Willard,D.A. (1993) Vegetational patterns in the Springfield Coal (Middle Pennsylvanian, Illinois Basin): Comparison of miospore and coal-ball record. (In: Modern and Ancient Coal Forming Environments. J.C.Cobb and C.B.Cecil, editors) Geological Society of America, Special Paper # 286 P. 139- 152

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