Trilobites of the Henllan Ash, Arenig series, Merioneth
By: by H. B. Whittington
Series: Bulletin of the British Museum (Natural History) Geology -- v. 11, no. 10
Publisher: British Museum (Natural History)
Published: 1966
Place of publication: London
Language: eng
Number of pages: 505
Subjects: Trilobites; Paleontology