Walkway surfaces measurement of slip resistance / a symposium sponsored by ASTM Subcommittee E17.26 on Methods of Measuring Pedestrian Friction of Committee E-17 on Skid Resistance, American Society for Testing and Materials, Denver, Colo., 30 June 1977 ; Carl Anderson, American Clean Tile Co., and John Senne, John Senne and Associates, Inc., editors. - Anderson, Carl, 1937-; Senne, John (Journal of ASTM International., 1978)