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- [6] ASPECTS OF LABOR-ECONOMICS - NATL-BUR-ECON-RES ANNALS OF THE AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE, 1963, 348 (JUL): : 172 - 173
- [7] ASPECTS OF LABOR-ECONOMICS - NATL-BUR-ECON-RES INDUSTRIAL & LABOR RELATIONS REVIEW, 1964, 17 (03): : 492 - 493