@book{bhlitem24828, title = {Memorias de la Real Academia de Ciencias Exactas, Fisicas y Naturales de Madrid }, volume = {t.11 (1887)}, copyright = {NOT_IN_COPYRIGHT}, url = {https://www.biodiversitylibrary.org/item/24828}, note = {https://www.biodiversitylibrary.org/bibliography/4247}, publisher = {Madrid Impr. Aguado 1850-}, author = {Real Academia de Ciencias Exactas FĂ­sicas y Naturales de Madrid.}, year = {1887}, pages = {492}, keywords = {Periodicals|Science|Societies, etc}, }