我国上市公司重污染行业投资回报率高吗?——基于我国A股上市公司1990-2007年经验数据的实证研究
아국상시공사중오염행업투자회보솔고마?——기우아국A고상시공사1990-2007년경험수거적실증연구
The Investment Returns of Heavily Polluting Industries in Listed Companies of China is High?——Empirical research based on experience data of A-share Listed Company for 1990-2007
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