The fauna of the Derfel Limestone of the Arenig district, North Wales
By: By H.B. Whittington and A. Williams
Series: Royal society of London. Philosophical transactions. Series B. Biological sciences -- no. 658, vol. 238 ... 1 March 1955
Publisher: Published by the Royal society
Published: 1955
Place of publication: London
Language: eng
Number of pages: 430
Notes: References, p. 425-427.