Speech by José Echegaray in the National Assembly on 8 March 1873 (Journal of Sessions of the National Assembly number 19): (Accompanied by a commentary by Alejandro Nieto from his book “La Primera República Española”). (2022). Journal of the Cortes Generales, 112, 19-41. https://doi.org/10.33426/rcg/2022/112/1655