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Automatic Block Signals and Signal Circuits

Ralph Scott

Published: 1908

Total Pages: 268

Railway Signaling and Communications

Published: 1920

Total Pages: 630

Modern Railway Signalling

M. G. Tweedie

Published: 1925

Total Pages: 288

Railway Signaling

Everett Edgar King

Published: 1921

Total Pages: 396

National Directory of Commodity Specifications

United States. National Bureau of Standards

Published: 1932

Total Pages: 554

Tabulation of Statistics Pertaining to Block Signals, Interlocking Plants and the Telegraph and the Telephone for Transmission of Train Orders as Used on the Railroads of the United States

Published: 1911

Total Pages: 30

Electric Railway Journal

Published: 1902

Total Pages: 854

Industrial Arts Index

Published: 1915

Total Pages: 534

The Industrial Arts Index

Published: 1915

Total Pages: 532

The Engineering Index

John Butler Johnson

Published: 1901

Total Pages: 1060