| 000 | 00520nam a2200145 a 4500 | ||
|---|---|---|---|
| 005 | 20220228110638.0 | ||
| 035 | _aF8901000710081 | ||
| 084 | _aTRB REC 1021 1985 | ||
| 245 | _aTransportation system management and signal systems / Trans-portation Research Board. | ||
| 260 | _aWashington, D.C. : TRB | ||
| 300 | _a58 p. | ||
| 440 | _aRecord ; 1021 / Transportation Research Board | ||
| 690 | _aTránsito - Signos y señales - Mantenimiento. | ||
| 710 | _aNational Research Council. Transportation Research Board (E-.U.A.) | ||
| 999 |
_c59895 _d59895 |
||