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Bisat |
1950 |
The junction faunas of the Viséan and Namurian.
Transactions of the Leeds Geologists Association., 6 (3): 10-26, fig.1, pl.1,2; Kendal.
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Gill |
1947 |
On the Upper Bowland Shales in Carla Beck, near Skipton, Yorkshire.
Proceedings Leeds phil., lit. Soc., 5,1: 60-64, fig.1; Leeds.
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