Published in Boletin de la Sociedad de Biologia de Concepcion, in 1984, in volume 55, pages 37-46

Published in Boletin De La Sociedad De Biologia De Concepcion, in 1984, in volume 55, pages 47-72

Published in Boletin De La Sociedad De Biologia De Concepcion, in 1984, in volume 55, pages 87-92

Published in Boletin De La Sociedad De Biologia De Concepcion, in 1984, in volume 55, pages 127-133

Published in Bol. Soc. Biol. Concepción, Chile, in 1984, in volume 55, pages 161-164