@book{bhlpg36794838, title = {du jiang yan sheng wu duo yang xing yan jiu yu bao hu }, url = {https://www.biodiversitylibrary.org/page/36794838}, publisher = {si chuan ke xue ji shu chu ban she}, author = {Chen, Changdu. }, year = {2000}, pages = {Page 52}, } @book{bhlpg36794836, title = {du jiang yan sheng wu duo yang xing yan jiu yu bao hu }, url = {https://www.biodiversitylibrary.org/page/36794836}, publisher = {si chuan ke xue ji shu chu ban she}, author = {Chen, Changdu. }, year = {2000}, pages = {Page 50}, }