@book{ 0-254235379, title = {Proceedings of the National Academy of Sciences of the United States of America}, address = {Washington, DC}, publisher = {National Acad. of Sciences}, year = {1915}, issn = {1091-6490}, language = {English}, note = {Gesehen am 09.03.2022}, url = {http://www.bibliothek.uni-regensburg.de/ezeit/?1461794}, url = {https://www.jstor.org/journal/procnatiacadscie}, url = {https://www.katalog.fh-zwickau.de/Record/0-254235379} }