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
Phillips, John.
1841.
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.
In: London: Longman, Brown, Green & Longmans.