History of Science

SCHMIDT, HEINRICH.

Leipzig, 1918.

KOPP, HERMANN.

München, R. Oldenbourg, 1873.

THOMSON, THOMAS.

London, Colburn and Bentley, n.d. (ca. 1835).

D'ABRO, A.

N.Y., Boni & Liveright, 1927.

PETERSEN, JUL.

K., 1876.

GOTFREDSEN, EDV.

K., 1950.

LÜTZHÖFT, FR.

Kbhvn., 1933.

KNEALE, WILLIAM AND MARTHA.

Oxford, Clarendon Press, (1966).

ZEUTHEN, H.G.

København, 1885.