G-R-S automatic train control,
continuous inductive single phase, two speed system : installation, maintenance, and ordering information.
APA Citation
General Railway Signal Company. (1928). G-R-S automatic train control: continuous inductive single phase, two speed system : installation, maintenance, and ordering information. 2nd ed. Rochester, N.Y.: General railway signal company.
MLA Citation
General Railway Signal Company. G-R-S Automatic Train Control: Continuous Inductive Single Phase, Two Speed System : Installation, Maintenance, And Ordering Information. 2nd ed. Rochester, N.Y.: General railway signal company, 1928.
Warning: These citations may not always be complete (especially for serials).