In-depth analysis of the legal theory and practice of competition restriction 并列题名：In-depth analysis of the legal theory and practice of competition restriction Risk-return analysis : the theory and practice of rational investing Research on the theory and practice of community correction Research on the theory and practice of community education a balanced analysis of the theory and practice of a sustainable portfolio 并列题名：Research on the theory and practice of community correction Ratings analysis:the theory and practice of audience research Study on the Lenin's theory and practice of socialism construction based on the theory and practice of the western region