Ornithology

FLOERICKES, KURT.

Stuttgart, Wiesbaden, 1922.

HOFFMANN, BERNHARD.

Bernburg, 1937.

GROSVENOR, GILBERT AND ALEXANDER WESTMORE. (EDTS.).

Washington, National Geographical Society, 1937).

FUGLENE VED DE DANSKE FYR.

Kbhvn., 1891-1939.

DANSK ORNITHOLOGISK FORENINGS TIDSSKRIFT.

Kbhvn., 1906-63.

SCHULZ, HEINRICH.

Hamburg, 1947.

NAUMANN, J.A. - RAUBVÖGEL.

Gera-Untermhaus, (1899).

DANSK ORNITHOLOGISK FORENINGS TIDSSKRIFT.

Kbhvn., 1906-88.

HELMS, O.

Kbhvn., 1919.

POULSEN, AAGE.

Skibby, (1959).

SEIER, A.F.V.

Aakirkeby, 1932.

SCHIØLER, E. LEHN.

Kbhvn., 1925-31.

BREHM, A.E.

Kbhvn., 1876.

RAFN, CARL GOTTLOB.

Kbhvn., 1802-09.

HOLSTEIN, VAGN.

Kbh., 1944.

SCHIØLER, E. LEHN.

Kbh., 1925-31.

WESTERSKOV, KAJ.

Kbhvn., 1943.

WIESE, V.

(Skibby), 1956.