Both listings specify Suggested Age: 22 Years and Up.
The listings show Xavier Pedro Gallego as the author of "A Corazon Abierto. Memorias de Avalon Esencial" and Father Thomas Keating, who is described as a Cistercian (Trappist) monk, the founder of the Centering Prayer Movement and Contemplative Outreach, and "known throughout the world as an exponent, teacher, and writer on contemplative prayer."
The listing notes the book is the Spanish translation of Father Keating's "Open Mind, Open Heart" and that it joins the author's other Spanish-language titles.