Torrens Rojas, E. ., J. M. . Rodríguez Caso, and A. R. . Barahona Echeverría. “The Teaching of Biological Evolution in Mexican Socialist Textbooks in the 1930s”. Culture &Amp; History Digital Journal, vol. 10, no. 2, Oct. 2021, p. e022, doi:10.3989/chdj.2021.022.