Ornithology

NES, J.G.TH. von.

Zutphen, (1953).

SALOMONSEN, FINN.

Kbhvn., 1953.

RAGN-JENSEN, LEIF.

(Kbhvn., 1951).

HAGBERG, KNUT.

Stockholm, (1942).

PELZELN, AUGUST von. - NOVARA-EXPEDITION.

Wien, Kaiserlich-Königlichen Hof-und Staatsdruckerei, 1865.

GOULD, JOHN.

London, Printed by Taylor and Francis - Published by the Author, (1862-) 73.

HAVERSCHMIDT, FR.

Leiden, 1949.