Table of Contents

Original Research

Page 5-14
Alfredo Sarmiento, Alfredo Serpell
Page 15-32
José Gonzalez, José Dominguez
Page 34-46
Arturo Holmgren Greve
Page 48-61
Luis F. Alarcón, Rodrigo Rivas L.
Page 62-71
Carlos Videla, Carlos Aguilar