Ornithology

FORSHAW, JOSEPH M.

(New Jersey, 1978).

COHEN, EDWIN.

Edinburgh, London, (1963).

ORNITHOLOGISCHE BERICHTE.

Heidelberg, 1947-50.

HANDBUCH DER VÖGEL MITTELEUROPAS.

Frankfurt a. Main, 1966-77.

BROWN, LESLIE.

London, (1959).

BERG, BENGT.

Stockholm, (1916).

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.

TIMMERMANN, GÜNTER.

Reykjavik, Ísafoldarprentsmidja H.F., 1938-49.

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

(Cambridge, Mass., 1951).

WEIGOLD, HUGO.

erlin, Freidländer & Sohn, 1930.

VAURIE, CHARLES.

(London, 1972).

HOLSTEIN, VAGN.

Kbhvn., 1942.

DAVIDSON, ALAN.

London, 1954.

RIVOLIER, JEAN.

London, (1956).

IVANOV, A. I., E. V. KOZLOVA, L. A. PORTENKO and A. JA. TUGARINOV.

MATVEJEV, S.D.

Moskva, 1950.

NEUNZIG, KARL.

Magdeburg, 1907.