Technology

SMILES, SAMUEL.

London, John Murray, 1857.

WEYGAND, HERRMANN.

Laipzig, Buchhandlung für Militairwissenschaften, 1872.

OXHOLM, PETER LOTHARIUS.

Kiøbenhavn, Nicolaus Møller, 1777.

MÜLLER, HEINRICH.

Berlin, Polytechnische Buchhandlung 1875.

DOWSETT, H.M.

London, The Gresham Publ. Comp., 1923-24.

(VARIOUS AUTHORS).

New York, American Telephone and Telegraph Company, 1979.

TELEPHONY -

Chicago, 1906-14.

SIEMENS, C. W.

Newcastle-Upon-Tyne, M. & M. W. Lambert, 1877.

MORRISON, L. W.

New York, American Telephone and Telegraph Company, 1947.

PETERSON, E.

New York, American Telephone and Telegraph Company, 1946.

MEINERT, F. (FRIEDRICH).

Berlin, Maurerschen Buchhandlung, 1819.

BECKER, MAX.

Stuttgart, Carl Mäcken, 1853.

HAARMANN, F.L.

Holzminden, Schulbuchhandlung in Braunschweig, 1862.

(SAHLBOM, W.).

Stockholm, N. Marcus, 1859.

BREYMANN, G.A.

Stuttgart, Gustav Weise, 1868-81.

BREYMANN, G.A.

Stuttgart, Hoffmann'sche Verlags-Buchhandlung, 1860.

BREYMANN, G.A.

Stuttgart, Gustav Weise, 1865.

BREYMANN, G.A.

Stuttgart, Hoffmann'sche Verlags-Buchhandlung, 1863.