Ornithology

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.

OAKES, CLIFFORD.

Edinburg, London, (1953).

CORY, CHARLES B.

Chicago, 1909.

STEWART, ROBERT E. a. CHANDLER S. ROBBINS.

Washington, (1958).

MARSHALL, A.J.

Oxford, 1954.

DOBSON, RODERICK.

London, N.Y., 1952.

RICHMOND, KENNETH.

London, (1958).

SIBLEY, CHARLES G. a. BURT L. MONROE, Jr.

New Haven, London, (1990).

SALOMONSEN, FINN.

Kbhvn., 1928.

LISTER, MICHAEL.

London, (1962).

NELSON, BRYAN.

Berkhamsted, 1978.