1. BMDP (Computer Program);Bureau of Labor Statistics,1985
2. Fall accident patterns: Characterization of most frequent work surface related injuries;Cohen;Professional Safety,1982
3. An analysis of occupational stair accident patterns;Cohen;Journal of Safety Research,1985
4. Body movements in climbing a ladder;Dewar;Ergonomics,1976
5. Investigation of the angle of inclination for setting nonself-supporting ladders;Irvine;Professional Safety,1977