| 000 | 01200cam a22002172 4500 | ||
|---|---|---|---|
| 001 | hsl000704655 | ||
| 003 | DGPO | ||
| 005 | 20170826152503.0 | ||
| 008 | 100713s1937 dcu f000 0 eng d | ||
| 040 |
_aGPO _cGPO _dMvI |
||
| 086 | 0 | _aY 4.IN 8/4:SI 2/3 | |
| 099 | _aY 4.IN 8/4:SI 2/3 | ||
| 245 | 0 | 0 |
_aRailway signal systems : _bhearing, 75th Congress, 1st session, on H.R. 185, to promote safety of employees and travelers on railroads by requiring common carriers engaged in interstate commerce to install, inspect, test, repair, and maintain block-signal systems, interlocking, highway grade crossing protective devices, automate train-stop, train-control, cab-signal devices, and other appliances, methods, and systems intended to promote safety of railroad operations, Mar. 19, 1937. |
| 260 |
_a[Washington, D.C.], _c1937. |
||
| 300 | _aiii, 64 p. | ||
| 500 | _aDocument for sale by the Superintendent of Documents, paper. | ||
| 500 | _aCRDP Program Historic Shelflist record. | ||
| 650 | 0 |
_aRailroads _xSafety appliances _zUnited States. |
|
| 650 | 0 |
_aRailroads _zUnited States _xSafety measures. |
|
| 710 | 1 |
_aUnited States. _bCongress. _bHouse. _bCommittee on Interstate and Foreign Commerce. |
|
| 949 |
_aBEV _bFed Docs |
||
| 999 |
_c262550 _d262550 |
||