Published in Boletin Soc Biol Concepcion, in 1975, in volume 49, pages 61-70

Created: 2013-07-14, modified: 2013-07-14

Published in Boletin de la Sociedad de Biología de Concepción, in 1975, in volume 49, pages 71-77

Created: 2013-12-22, modified: 2013-12-22

Published in Boletin Soc Biol Concepcion, in 1975, in volume 49, pages 177-184

Created: 2013-07-14, modified: 2013-07-14