The British Library:
British Library digitised image from page 118 of "Geology in systematic notes and tables for the use of teachers and of taught. ... With ... illustrations and a geological map of Great Britain. Second edition"
The British Library:
British Library digitised image from page 118 of "Geology in systematic notes and tables for the use of teachers and of taught. ... With ... illustrations and a geological map of Great Britain. Second edition"
The British Library:
British Library digitised image from page 118 of "Geology in systematic notes and tables for the use of teachers and of taught. ... With ... illustrations and a geological map of Great Britain. Second edition"