书目详细信息
： Automatic block signals and signal circuits
书目信息 机读格式(MARC)
| 个人名称： | Scott, Ralph |
|---|---|
| 题名： | Automatic block signals and signal circuits American practice in the installation and maintenance of signals electrically controlled, and operated by electric or other power with descriptions of the accessories now regarded as standard / ed.by Ralph Scott. |
| 版本说明： | first edition |
| 出版发行项： | New York： mcgraw book company， 1908． |
| 载体形态： | 243 p．： illus. ； cm． |