@book{bhlitem47733, title = {A review of recent attempts to classify birds; an address delivered before the Second international ornithological congress on the 18th of May, 1891 }, copyright = {NOT_IN_COPYRIGHT}, url = {https://www.biodiversitylibrary.org/item/47733}, note = {https://www.biodiversitylibrary.org/bibliography/13335}, publisher = {Budapest, Pub. at the office of the congress, 1891}, author = {Sharpe, Richard Bowdler, and International Ornithological Congress Budapest, Hungary}, year = {}, pages = {106}, keywords = {Birds|Classification|}, }