Research on the theory and system of fiscal law 并列题名:Research on the theory and system of fiscal law Research on the theory and system of ecological civilization Research on the theory and practice of real estate law 并列题名:Research on the theory and system of ecological civilization Research on the theory and practice of international private law Research on the theory and system of taxpayer's rights protection Research on the fundamentals and institutions of financial law Research on the practice and theory of tax law research on the sociology of criminal law