Zoology

HICKIN, NORMAN E.

London, Hutchinson, (1965).

KIELSEN, FREDERIK CHRISTIAN.

Hafniae (Copenhagen), C. Steen, 1835.

REBAU, HEINRICH.

Stuttgart, Weise & Stoppani, 1841.

ESCHRICHT, DAN.FREDR.

K., 1838.

KUHN, OSKAR.

Stuttgart, 1949.

NAEF, ADOLF.

Jena, 1922.

HEDPETH, JOEL W. (ED.).

Baltimore, 1957.

THINGVALLAVATN -

Odense, 1992.

STROMER v. REICHENBACH, ERNST.

Leipzig u. Berlin, 1912.

KJØLBYE, C.S.

Kbhvn., 1821.

HOLMGREN, NILS.

Uppsal & Stockh., 1909-13.

STEIN, C.U. (Udg.).

Hos C.Steen, K., 1832.

AXELROD, HERBERT A. and LEONHARD P. SCHULTZ.

New York, McGraw-Hill, (1955).

JORDAN, DAVID STARR and BARTON WARREN EVERMANN.

Washington, Government Printing Office, 1900.

JORDAN, DAVID STARR and BARTON WARREN EVERMANN.

Washington, Government Printing Office, 1898.

MEINERT, FR.

Kjøbenhavn, Bianco Luno, 1886.

HAMILTON, W. D.

London, Academic Press, 1964.

DARWIN, CHARLES.

Stockholm, Albert Bonniers, 1872.