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日本经济研究中心的生产率数据库以日中韩三国的所有上市企业(金融业除外)为观测对象。数据库囊括了日本企业1985-2004
The Productivity Database of Japan Economic Research Center observes all listed companies in Japan, Korea and the Republic of Korea (other than the financial industry). The database includes Japanese companies 1985-2004