@book{bhlitem16823, title = {A text-book of zoology }, volume = {2}, copyright = {Public domain. The BHL considers that this work is no longer under copyright protection.}, url = {https://www.biodiversitylibrary.org/item/16823}, note = {https://www.biodiversitylibrary.org/bibliography/1746}, publisher = {London, Macmillian and co., limited, 1921}, author = {Parker, T. Jeffery (Thomas Jeffery), and Haswell, William Aitcheson}, year = {1921}, pages = {744}, keywords = {Zoology}, }