0 文档热度: 文档分类: 金融/证券--金融资料 系统标签: crsppermnoamexformatentitiescusip CRSP InstituteofFinance NationalChiaoTungUniversity - CRSPUSStockDatabases : (NYSE) (AMEX) (Nasdaq) (NYSE) 1925 12 1962 7 (AMEX) 1962 7 (NASDAQ) 1972 12 14 ( 3 6 9 12 ) CRSP I. (Entities) A. PER...