Technology

MÜLLER, HEINRICH.

Berlin, Polytechnische Buchhandlung 1875.

BERGSØE, PAUL.

Copenhagen, 1938.

SMILES, SAMUEL.

London, John Murray, 1857.

THORSTENSEN, SV.

Oslo, 1946.

SIDENBLADH, ELIS.

Sth., 1947.

SVENSKA JÄRNVÄGER.

Stockholm., 1868-(72).

DOWSETT, H.M.

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

WEYGAND, HERRMANN.

Laipzig, Buchhandlung für Militairwissenschaften, 1872.

OXHOLM, PETER LOTHARIUS.

Kiøbenhavn, Nicolaus Møller, 1777.

(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.