| 000 | 00473nam a2200145 a 4500 | ||
|---|---|---|---|
| 005 | 20220228110634.0 | ||
| 035 | _aF8901000709809 | ||
| 084 | _aTRB REC 744 1980 | ||
| 245 | _aRailroad track and facilities / Transportation Research Boa-rd. | ||
| 260 | _aWashington, D.C. : TRB | ||
| 300 | _a66 p. | ||
| 440 | _aRecord ; 744 / Transportation Research Board | ||
| 690 | _aVía férrea - Pruebas. | ||
| 710 | _aNational Research Council. Transportation Research Board (E-.U.A.) | ||
| 999 |
_c59630 _d59630 |
||