000			00747nam a2200169 a 4500
005			20220228110623.0
035			_aF8901000708916
084			_aPCA BUL D109 1966
100			_aBalmer, G. G.
245			_aLaboratory studies of the skid resistance of concrete / by -G. G. Balmer and B. E. Colley.
260			_aSkokie, Illinois : atories, Development Department
300			_a28 p.
440			_aBulletin D109 / Portland Cement Association, Research and D-evelopment Laboratories, Development Department
500			_a"Authorized reprint from copyrighted Journal of Materials, - Vol. 1, No. 3, 536-559 (September 1966) American Society o-f Testing and Materials".
690			_aConcreto - Agregados - Pruebas.
700			_aColley, B. E., coaut.
999			_c58873 _d58873