Published in Boletin De La Sociedad De Biologia De Concepcion, in 1989, in volume 60, pages 35-42

Published in Boletin De La Sociedad De Biologia De Concepcion, in 1989, in volume 60, pages 51-110

Published in Boletin De La Sociedad De Biologia De Concepcion, in 1989, in volume 60, pages 111-122

Published in Boletin De La Sociedad De Biologia De Concepcion, in 1989, in volume 60, pages 161-172

Published in Boletin de la Sociedad de Biologia de Concepcion, in 1989, in volume 60, pages 201-225

Published in Boletin De La Sociedad De Biologia De Concepcion, in 1989, in volume 60, pages 239-245