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[文献書誌] Tetsuji Yamada, Tadashi Yamada, Chia-Ching Chen: "Healthcare Services Accessibility of Children in the USA"University of Tsukuba, Institute of Policy and Planning Sciences, Discussion Paper Series. No.1052. 1-19 (2003)
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[文献書誌] 山田直志, 山田哲司, 曾衛紅, 陳佳青: "日本の内部労働市場:被雇用者の超過労働と健康"University of Tsukuba, Institute of Policy and Planning Sciences, Discussion Paper Series. No.1077. 1-35 (2004)
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[文献書誌] Tadashi Yamada, Tetsuji Yamada: ""The Demand for Health Check-ups under Uncertainty" Labor Markets and Firm Benefit Policies in Japan and the United States"National Bureau of Economic Research. 400 (2003)
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[文献書誌] 山田直志, 山田哲司, 曾衛紅, 陳佳青: "日本の被雇用者の超過労働と健康に関しての考察、『経済構造の変化と労働市場』報告書"財団法人統計研究会. 220 (2004)