@book{143293, author = {Phillips, John}, title = {{Figures and Descriptions of the Palaeozoic Fossils or Cornwall, Devon, and West Somerset, Observed in the Course of the Ordnance Geological Survey of that District}}, publisher = {London: Longman, Brown, Green \& Longmans}, year = 1841, url = {https://vlp-new.ur.de/records/lit24896} }