Theoretical and practical research on collaborative governance of regional air pollution Theoretical and practical research on Huizhou contemporary regional architecture Spatial correlation and regional collaborative governance of air pollution Theoretical and practical research on local legal regime of China Theoretical and practical researches on the democratic selfgovernment of urban community in China 并列题名:Spatial correlation and regional collaborative governance of air pollution theoretical and practical research on original exhibitions Theoretical and practical research on sentencing standardization 并列题名:Theoretical and practical research on Huizhou contemporary regional architecture Theoretical and practical research on electronic signature handwriting identification