[Industrial contracts and social security; recent developments in the U.S..].
FRIEDLANDER
W
W
D006801:Humans; D007221:Industry; D009784:Occupational Diseases; D009790:Occupations; D012943:Social Security
INDUSTRY AND OCCUPATIONS; SOCIAL SECURITY
Gewerkschaftsverträge und soziale Sicherheit; neue Entwicklung in den Vereinigten Staaten.