Author:

Butterworth,M.A.;Smith,A.H.V.

Year:

1976

Title:

The age of the British Upper Coal Measures with reference to their miospore Content.

Reference:

Butterworth,M.A. et al. (1976) The age of the British Upper Coal Measures with reference to their miospore Content. Review of Palaeobotany and Palynology Vol. 22 P. 281- 306

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