| 000 | 00472nam a2200133 a 4500 | ||
|---|---|---|---|
| 005 | 20220228110625.0 | ||
| 035 | _aF8901000709094 | ||
| 084 | _aPCA AEB 9 1963 | ||
| 245 | _aParabolic arches of variable thickness / Portland Cement As-sociation. | ||
| 260 | _aSkokie, Illinois : Portland Cement Association | ||
| 300 | _a44 p. | ||
| 440 | _aAdvanced Engineering Bulletin; 9 / Portland Cement Associat-ion | ||
| 690 | _aArcos parabólicos de grosor variable (techos) - Diseño. | ||
| 999 |
_c59009 _d59009 |
||