| 000 | 00511nam a2200145 a 4500 | ||
|---|---|---|---|
| 005 | 20220228110618.0 | ||
| 035 | _aF8901000708390 | ||
| 084 | _aPCA BUL 15 1947 | ||
| 100 | _aVerbeck, George J. | ||
| 245 | _aCamera Lucida method for measuring air voids in hardened co-ncrete / by George J. Verbeck. | ||
| 260 | _aChicago : Portland Cement Association, Research Laboratories | ||
| 300 | _a[16] p. | ||
| 440 | _aBulletin 15 / Portland Cement Association | ||
| 690 | _aConcreto - Contenido de aire - Determinación. | ||
| 999 |
_c58538 _d58538 |
||