Juan Ruiz
The Book of True Love. 
The Pennsylvania State University Press, 1978. Verse translation of "Libro de buen amor" and introduction by Saralyn R. Daly. Old Spanish edited by Anthony N. Zahareas. 0271005238  x/454 pages.
Large-format softcover volume, measuring approximately 6.25" x 9.25", shows light shelfwear. Binding is sound. Pages are clean and bright.