Spanish Liber Gratissimus Cited by user EdgarCabreraFariña on 14 Dec 2023 El Liber Gratissimus (Libro más gratuito) es un tratado de Pedro Damián sobre la simonía.
English Liber Gratissimus Cited by user Kingoflettuce on 30 Nov 2023 The Liber Gratissimus (Most Gratuitous Book) is a treatise by Peter Damian on simony.