Zoology

SCHWARZNECKER, G.

Berlin, Wiegandt, 1879.

WALTER, EMIL.

CHRISTIANSØ -

KRAMP, P.L.

Copenhagen, 1965.

HOME, EVERARD. - THE TUSKS OF THE NARWHALE.

(London, W. Bulmer and Co., 1813).

STEPHENSEN, K.

Kjøbenhavn, Reitzel, 1917.

BRÜNING, CHRISTIAN (HRSG.).

Braunschweig, Wenzel & Sohn, (1913).

STITZ, H.

KIEFFER, J.J.

DAHL, E., S. DANIELSSEN ET AL. (EDTS.).

Arendal, 1984.

HANCOCK, ALBANY.

(London, Richard Taylor and William Francis, 1859)

WAGSTAFFE, REGINALD a. J. HAVELOCK FIDLER (Edt.).

ANONYMOUS.

Leipzig, J.J. Weber, 1848.

POULSEN, ERIK M.

Copenhagen, 1965.

OWEN, RICHARD.

(London, Richard Taylor, 1834)

FARADAY, MICHAEL. - ANIMAL ELECTRICITY.

(London, Richard and John E. Taylor, 1839).

DAVY, JOHN. - ANIMAL ELECTRICITY.

(London, Richard Taylor, 1834)

CARPENTER, WILLIAM B.

(London, Taylor and Francis, 1866).