Theoretical and empirical research on intergroup relation 并列题名：Theoretical and empirical research on rural revitalization 并列题名：Theoretical and practical research on sentencing standardization Theoretical and empirical research on rural revitalization Theoretical and empirical research on teacher learning 并列题名：Theory and empirical research on industrial cluster 并列题名：Oretical and empirical research on intergenerational mobility in China Theoretical and empirical research of synergistic effects Theoretical and empirical research on criminal trail 并列题名：Oretical and empirical research on the patent maintenance