Geology

BØGGILD, O.B.

Kjøbenhavn, Reitzel, 1905.

FORCHHAMMER, G.

(København, 1826, 1828, 1832).

FORCHHAMMER, G.

(København, 1825).

JAKOBSEN, BØRGE.

Kbh., 1964.

BRINKMANN, ROLAND.

Stuttgart, 1959-61.

ROUGEMONT, FRIEDRICH VON.

Stuttgart, R. Besser, 1856.

PUGGAARD, CHRISTOPHER.

Bern, C.A. Jenni, 1851.

HUMBOLDT, ALEXANDER von.

Leipzig, Johann Ambrosius Barth, 1837-38.

WOOD, W. - ILLUSTRATED BY WILLIAM DANIELL WITH 50 ADDITIONAL PLATES.

London, Cadell and Davies, 1897.

PACKARD, ALPHEUS SPRING.

New York, Hodges, 1891.

DARWIN, CHARLES.

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

HEER, OSWALD.

Stockholm, Nordstedt & Söner, 1870.

BERTRAND, E.

A la Haye, Pierre Grosse & Daniel Pinet, 1763.

JOHNSTRUP, F.

Kbhvn., 1882.

STAHL, ALFRED u. ARTUR EBERT.

Bremen-Horn, 1952.

FORBES, CHARLES S.

London, John Murray, 1860.

WEIDICK, ANKER.

Copenhagen, 1968.

FLINT, RICHARD FOSTER.

N.Y., London, (1948).