Walkway surfaces : measurement of slip resistance : a symposium, Denver, Colo., 30 June, 1977 /
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 ; Carl Anderson and John Senne, editors.
- Philadelphia : ASTM, c1978.
- 109 p. : ill. ;table,figs,photos, 23 cm.
- ASTM special technical publication ; 649 .
- ASTM special technical publication ; 649. .