000			00682nam a2200157 a 4500
005			20220228110622.0
035			_aF8901000708830
084			_aPCA BUL D61 1963
100			_aHanson, J. A.
245			_aStrength of structural lightweight concrete under combined -stress / by J. A. Hanson.
260			_aSkokie, Illinois : atories, Development Department
300			_a[12] p.
440			_aBulletin D61 / Portland Cement Association, Research and De-velopment Laboratories, Development Department
500			_a"Reprinted from the Journal of the PCA Research and Develop-ment Laboratories Vol. 5, No. 1, 39-46 (January, 1963)."
690			_aConcreto estructural ligero - Pruebas.
999			_c58827 _d58827