Ciencia de la Lógica (Tomo I & II)
Buenos Aires: Ediciones Solar, 1993. Reprint. 498, 592 pp., small square 8vo. Sixth edition. Spanish text. Translated from the German by Augusta and Rodolfo Mondolfo, with a prologue by Rodolfo Mondolfo. Sewn signatures in wrappers; light soiling and edgewear to covers, otherwise as new.