@book{bhlitem77147, title = {On the intestinal tract of birds; with remarks on the valuation and nomenclature of zoological characters }, copyright = {NOT_IN_COPYRIGHT}, url = {https://www.biodiversitylibrary.org/item/77147}, note = {https://www.biodiversitylibrary.org/bibliography/32790}, publisher = {London, 1901}, author = {Mitchell, P. Chalmers (Peter Chalmers), Sir,}, year = {}, pages = {118}, keywords = {Birds|Intestines|physiology|}, }