| 000 | 00448nam a2200145 a 4500 | ||
|---|---|---|---|
| 005 | 20220228110618.0 | ||
| 035 | _aF8901000708434 | ||
| 084 | _aPCA BUL 49 1954 | ||
| 100 | _aPowers, T. C. | ||
| 245 | _aVoid spacing as a basis for producing air-entrained concret-e / by T. C. Powers. | ||
| 260 | _aChicago : atories | ||
| 300 | _a[24] p. | ||
| 440 | _aBulletin 49 / Portland Cement Association | ||
| 690 | _aConcreto, entrada de aire en - Análisis. | ||
| 999 |
_c58572 _d58572 |
||