000 | 00671nam a2200157 a 4500 | ||
---|---|---|---|
005 | 20220228110621.0 | ||
035 | _aF8901000708750 | ||
084 | _aPCA BUL D14 1956 | ||
100 | _aCarlson, C. C. | ||
245 | _aLightweight aggregates for concrete masonry units / by C. C-. Carlson. | ||
260 | _aSkokie, Illinois : atories, Development Department | ||
300 | _a[18] p. | ||
440 | _aBulletin D14 / Portland Cement Association, Research and De-velopment Laboratories, Development Department | ||
500 | _a"Authorized reprint from copyrighted Journal of the America-n Concrete Institute November 1956, Proceedings Vol. 53. p.- 491." | ||
690 | _aConcreto - Agregados - Pruebas. | ||
999 |
_c58779 _d58779 |