Graba, Tagebuch, Reise nach Färo, 1830, p. 151-54. Macgillivray, Hist. British Birds, vol. III, p. 745. Ibis, vol. V, 1863, p. 469.
Scienze
Pagina 389
. Macgillivray, Hist. British Birds, vol. III, p. 745. Ibis, vol. V, 1863, p. 469..
Scienze
Pagina 389