@book{bhlitem48639, title = {Zur Fortpflanzungsgeschichte der gesammten Vögel. Text }, copyright = {Public domain. The BHL considers that this work is no longer under copyright protection.}, url = {https://www.biodiversitylibrary.org/item/48639}, note = {https://www.biodiversitylibrary.org/bibliography/13810}, publisher = {Dresden, 1856}, author = {Thienemann, Friedrich August Ludwig,}, year = {}, pages = {446}, keywords = {Birds|Reproduction|}, }