Risk-return analysis : the theory and practice of rational investing the theory and practice of rational investing Ratings analysis:the theory and practice of audience research 并列题名：Ratings analysis:the theory and practice of audience research a balanced analysis of the theory and practice of a sustainable portfolio 风险-收益分析：理性投资的理论与实践．第1卷：the theory and practice of rational investing．Volume I 风险－收益分析：理性投资的理论与实践．第1卷：the theory and practice of rational investing．Volume I Study on the theory and practice of national central city 风险－收益分析：理性投资的理论与实践．第2卷：the theory and practice of rational investing．Volume II 并列题名：In-depth analysis of the legal theory and practice of competition restriction