SCIENCE & SOCIETY Vygotsky's contributions to a dialectical materialist psychology Bickley R View more: Pubmed Sci Soc Safety and health on the job as a class issue: the Worker's Health Bureau of America in the 1920s Rosner D and Markowitz G View more: Pubmed Sci Soc On the uses of disinformation to legitimize the revival of the cold war: health in the U.S.S.R Szymanski A View more: Pubmed Sci Soc The reversal of federal policy toward worker safety and health Szasz A View more: Pubmed Sci Soc