Table of Contents

Original Research

Page 5-17
Guillermo Thenoux, Gabriel Garcia
Page 20-27
José Castañeda Ávila, Cecilia Olague Caballero,, Facundo M. Almeraya, Citlalli Gaona Tiburcio, Alberto . Martínez Villafañe
Page 29-34
Andrés Caroca
Page 36-41
Ian Eilenberg
Page 43-59
Carlos Videla