Author:

Richardson,J.B.

Year:

1967

Title:

Some British Lower Devonian spore assemblages and their stratigraphic significance.

Reference:

Richardson,J.B. (1967) Some British Lower Devonian spore assemblages and their stratigraphic significance. Review of Palaeobotany and Palynology Vol. 1 # 1 P. 111- 129

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