![Development of standards for industrial and firefighter's head protective devices T. Dayton Brown Testing Laboratories Division : Anon Test Report DTB06R73–1273. National Institute for Occupational Safety and Health, Rockville, Maryland, USA, 1973, 2 vols, pp274 Abstr in CIS Abstracts (CIS/74–1415)]()
Development of standards for industrial and firefighter's head protective devices T. Dayton Brown Testing Laboratories Division : Anon Test Report DTB06R73–1273. National Institute for Occupational Safety and Health, Rockville, Maryland, USA, 1973, 2 vols, pp274 Abstr in CIS Abstracts (CIS/74–1415)1975