@book{bhlpg4979292, title = {Beihefte zum botanischen Centralblatt }, volume = {Bd.15 (1903)}, url = {https://www.biodiversitylibrary.org/page/4979292}, publisher = {Verlag von Gebrüder Gotlhelft}, author = {}, year = {1903}, pages = {Page 30}, } @book{bhlpg4979279, title = {Beihefte zum botanischen Centralblatt }, volume = {Bd.15 (1903)}, url = {https://www.biodiversitylibrary.org/page/4979279}, publisher = {Verlag von Gebrüder Gotlhelft}, author = {}, year = {1903}, pages = {Page 17}, } @book{bhlpg4979287, title = {Beihefte zum botanischen Centralblatt }, volume = {Bd.15 (1903)}, url = {https://www.biodiversitylibrary.org/page/4979287}, publisher = {Verlag von Gebrüder Gotlhelft}, author = {}, year = {1903}, pages = {Page 25}, }