"Labor laws and legislation United States." . . "USA." . . . . . "Labor law" . . . . "Cases on labor law" . . . . . "Trials, litigation, etc" . . "Trials, litigation, etc"@en . . . . "Cases and materials on labor law Statutory supplement" . . . "Cases and materials on labor law [Hauptbd.]" . "Cases and materials on labor law" . . "Cases and materials on labor law"@en . . . . . . . "Cases and materials on labor law : statutory supplement"@en . . . . . . . "Derecho del trabajo Estados Unidos." . . "Arbeitsrecht." . . "Prawo pracy Stany Zjednoczone studium przypadku." . . "Travail Droit Etats-Unis Jurisprudence." . . "Travail Droit États-Unis Jurisprudence." .