Blue-collar mental health: changes since 1968.
D003674:Defense Mechanisms; D005006:Ethnicity; D005190:Family; D005260:Female; D006806:Human Rights; D006801:Humans; D008297:Male; D008603:Mental Health; D009790:Occupations; D010549:Personal Satisfaction; D011590:Psychology, Industrial; D012922:Social Change; D012923:Social Class; D012940:Social Problems; D013997:Time Factors; D014481:United States; D014937:Work