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Some determinants of the manpower prospects, 1966-1985
Spengler, Joseph J. - In: Manpower tomorrow : prospects and priorities ; report …, (pp. 87-112). 1967
Persistent link: https://www.econbiz.de/10002860357
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Dependency ratios : their use in economic analysis
Clark, Robert L.; Spengler, Joseph J. - In: Research in population economics : a research annual 2 (1980), pp. 63-76
Persistent link: https://www.econbiz.de/10002001997