Entrena tu cerebro: Ejercicios prácticos para mejorar la memoria, concentración y agilidad mental Format: PDF (digital download) Language: Spanish Author: Varies by edition (common authors include neuropsychologists like Dr. Alvaro Bilbao, or anonymous compilations from puzzle experts)
If you are looking for the PDF to find the exercises, you can start your own training regimen today based on the summary above: entrena tu cerebro pdf