Published in Revista Chil Ent, in 1974, in volume 8, pages 11-15

Published in Revista Chil Ent, in 1974, in volume 8, pages 17-21

Published in Revista Chil Ent, in 1974, in volume 8, pages 23-26

Published in Revista Chil Ent, in 1974, in volume 8, pages 35-38

Published in Revista Chil Ent, in 1974, in volume 8, pages 47-66

Published in Revista Chil Ent, in 1974, in volume 8, pages 67-69

Published in Revista Chil Ent, in 1974, in volume 8, pages 95-116

Published in Revista Chil Ent, in 1974, in volume 8, pages 117-118

Published in Revista Chil Ent, in 1974, in volume 8, pages 119-121

Published in Revista Chil Ent, in 1974, in volume 8, pages 133-134

Published in Revista Chil Ent, in 1974, in volume 8, pages 149-150