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1 | Title: | Alternating current block signals on the Southern Railway | |
Creator: | Eck, W. J. | ||
General Railway Signal Company | |||
Publication: | General Railway Signal Co, Rochester, NY,1913. | ||
Call #: | TF630 E19 | ||
Extent: | 51 p. : ill., fold. diagr. ; 24 cm. | ||
Subjects: | Southern Railway (U.S.) | Railroads -- Signaling -- Block system | ||
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