Operation of trains on single track under protection of automatic block signals, – Sperry, Henry Muhlenberg, 1861- [from old catalog] / / 625.165A512 / / / / 10004590

Cote

/ / 625.165A512 / / / / 10004590

Auteur

Sperry, Henry Muhlenberg, 1861- [from old catalog]

Maison d’édition

The American Association of railroad superintendents

Année

1927.

Pages

2 p.l., 20 p. front

Sujets

Railroads – Signaling – Block system
Automatic block signals.

Localisation

TAB 150