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- [1] THE ROLE OF SOCIAL INSURANCE IN THE UNITED-STATES INDUSTRIAL & LABOR RELATIONS REVIEW, 1960, 14 (01): : 107 - 112
- [6] RETIREMENT PLANS UNDER SOCIAL INSURANCE AND COLLECTIVE BARGAINING IN THE UNITED-STATES JOURNALS OF GERONTOLOGY, 1951, 6 (04): : 57 - 58