@book{bhlitem106420, title = {Principles of geology }, volume = {v.3}, copyright = {In copyright}, url = {https://www.biodiversitylibrary.org/item/106420}, note = {https://www.biodiversitylibrary.org/bibliography/50199}, publisher = {London, John Murray, 1837}, author = {Lyell, Charles, Sir,}, year = {}, pages = {455}, }