000 00576nam a2200145 a 4500
005 20220228110623.0
035 _aF8901000708902
084 _aPCA BUL D98 1966
100 _aLitvin, Albert.
245 _apenetration test for determining the compressive strength o-f low-density concrete / by Albert Litvin and Cleaver H. Br-inkerhoff
260 _aSkokie, Illinois : atories, Development Department
300 _a[16] p.
440 _aBulletin D98 / Portland Cement Association, Research and De-velopment Laboratories, Development Department
690 _aConcreto - Pruebas.
999 _c58865
_d58865