Ornithology

HANDBUCH DER VÖGEL MITTELEUROPAS.

Frankfurt a. Main, 1966-77.

BROWN, LESLIE.

London, (1959).

KUPFFER, C. und B. BENECKE.

Halle, 1879.

UTTENDÖRFER, O.

(Berlin), J. Neumann=Neudamm, (1939).

GOULD, JOHN.

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

GOULD, JOHN.

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

BERG, BENGT.

Stockholm, (1916).

DIXON, CHARLES.

London, Glasgow, Blackie, 1900.

MATVEJEV, S.D.

Moskva, 1950.

NEUNZIG, KARL.

Magdeburg, 1907.

SLUD, PAUL.

N.Y., 1964.

HEILMANN, GERHARD og A.L.V. MANNICHE.

Kbhvn., 1928-30.

GOODWIN, DEREK.

London, 1967.

LOWERY, GEORGE H.

Louisiana, (1960).

PETERS, HAROLD S. a. THOMAS D. BURLEIGH.

(Cambridge, Mass., 1951).

SIBLEY, CHARLES a. JON E. aHLQUIST.

New Haven, London, (1990).

AUSTIN, OLIVER L. a. NAGAHISA KURODA.

Cambridge, Mass., 1953.

SCHÜZ, ERNIT.

Stuttgart, 1959.