Early Ordovician (Arenig) stratigraphy and faunas of the Carmarthen district, south-west Wales
Fortey, Richard A Owens, Robert M
Article
1978
Bulletin of the British Museum (Natural History) Geology
30
225--294
BioStor
English
London, BM(NH),
BioStor: https://biostor.org/reference/118661
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