Technology

SIDENBLADH, ELIS.

Sth., 1947.

SVENSKA JÄRNVÄGER.

Stockholm., 1868-(72).

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.

TELEPHONY -

Chicago, 1906-14.

THORSTENSEN, SV.

Oslo, 1946.

SMILES, SAMUEL.

London, John Murray, 1857.

BERGSØE, PAUL.

Copenhagen, 1938.

(VARIOUS AUTHORS).

New York, American Telephone and Telegraph Company, 1979.

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.