000			00552nam a2200157 a 4500
005			20220228110619.0
035			_aF8901000708470
084			_aPCA BUL 63 1956
100			_aPowers, T. C.
245			_aHydraulic pressure in concrete / by T. C. Powers.
260			_aChicago : atories
300			_a[12] p.
440			_aBulletin 63 / Portland Cement Association
500			_a"Reprinted from the copyrighted Proceedings of the American- Society of Civil Engineers, Paper No. 742, Vol. 81, July, - 1955."
690			_aConcreto - Presión hidráulica.
999			_c58606 _d58606