Palaeontology

ACCONCI, LUIGI.

Pisa, T. Nistri e C., 1880.

CLARK, WILLIAM BULLOCK a. MAYVILLE W. TWITCHELL.

Washington, 1915.

ROBBA, ELIO.

Milano, 1968.

BERTHELSEN, OLE.

Copenhagen, 1962.

MOBERG, JOH.CHR.

Stockh., 1888.

KAUTSKY, F.

Berlin, 1925.

GLIBERT, MAXIME.

Bruxelles, 1957.

GLIBERT, MAXIME.

Bruxelles, 1954.

ANDERSON, HANS-JOACHIM.

Stuttgart, 1959.

DACQUÉ, EDGAR.

München, 1939.

BIRKET-SMITH, S.J.R.

Kbhvn., 1977.

WEILER, WILHELM.

Berlin, 1942.

MORTENSEN, TH.

Copenhagen, 1904.

GEINITZ, HANNS BRUNO.

Dresden u. Leipzig, 1846.