found: Author's Se equivocó Marx ... ? ... 1932.
found: Domingo, Carmen. Mi querida hija Hildegart, 2008:p 4 of cover (journalist and member of Juventudes Socialistas; wrote books on sexual education and the role of women in modern society; murdered by mother [Rodríguez, Aurora, 1890-], at age 18, June 9, 1933; highly publicized case in Spain)
found: Fernández Soriano, J.J. Estudio psicoanalítico de la paranoia : el caso de la madre asesina de Hildegart, 2012:p. 55 (b. Dec. 9, 1914) p. 4 of cover (d. June 9, 1933)
found: LC database, Dec. 19, 2012(usage: Hildegart; Hildegart Rodríguez Carballeira)