| 000 | 00524nam a2200145 a 4500 | ||
|---|---|---|---|
| 005 | 20220228110529.0 | ||
| 035 | _aF8901000703773 | ||
| 084 | _aHRB REC 269 1969 | ||
| 245 | _aSymposium safety factors in soil engineering, 4 reports / H-ighway Research Board. | ||
| 260 | _aWashington, D.C. : HRB | ||
| 300 | _a34 p. | ||
| 440 | _aRecord ; 269 / Highway Research Board | ||
| 690 | _aCimentaciones - Factor de seguridad.Excavaciones - Factor de seguridad. | ||
| 710 | _aE.U.A. National Research Council. Highway Research Board. | ||
| 999 |
_c55309 _d55309 |
||