Research on theory and practice of food quality and safety supervision 并列题名:Research on theory and practice of food quality and safety supervision Research on theory and practice of water-saving society construction Research on the management problems of food quality and safety in China Research on theory and practice of government procurement services Research on the theory and practice of community education Research on theory and practice of policy process Research on theory and practice of rural revitalization Research on theory and practice of archival dual value Research on theory and practice of city-area economy