Research on the legal system of cultivated land protection Research on the legal system of public interest litigation Research on the legal system of reorganization Research on the legal system of environment and resources allocation Research on the legal system of sovereign bond default resolution Research on the theory and system of taxpayer's rights protection 并列题名:Research on the legal system of public interest litigation 并列题名:Research on the legal system of environment and resources allocation Research on the legal system of protection for Chinese overseas Research on the international legal system of diplomatic protection