000			00789nam a2200169 a 4500
005			20220228110621.0
035			_aF8901000708747
084			_aPCA BUL D9 1956
100			_aMc Henry, Douglas.
245			_aReview of data on effect of speed in mechanical testing of -concrete / by Douglas Mc Henry and J. J. Shideler.
260			_aSkokie, Illinois. : atories, Development Department
300			_a[12] p.
440			_aBulletin D9 / Portland Cement Association, Research and Dev-elopment Laboratories, Development Department
500			_a"Authorized reprint from the copyrighted symposium on speed- of Testing, Special Technical publication no. 185 publishe-d by the American Society for Testing Materials 1956"
690			_aConcreto - Pruebas.
700			_aShideler, J. J., coaut.
999			_c58777 _d58777