THINGSTAD, Per Gustav. Bird communities at two marshes in Øvre Forra, today and 40 years ago. Ornis Norvegica, [S. l.], v. 38, p. 18–24, 2015. DOI: 10.15845/on.v38i0.890. Disponível em: https://boap.uib.no/index.php/ornis/article/view/890. Acesso em: 26 dec. 2024.