A Monograph of the Ordovician Trilobites of the Bala Area, Merioneth

• 31 December 1966
• journal article
• other
• Published by Taylor & Francis in Monographs of the Palaeontographical Society
• Vol. 120  (512) , 63-92
• https://doi.org/10.1080/25761900.2022.12131700

Abstract