an empirical study based on L street in Beijing an empirical study based on the firms in China an empirical study based on tone analysis an empirical study based on Chinese experience an empirical study based on team learning theory an empirical study based on China an empirical study based on typical cases 社区权力与基层治理:基于北京市L街道的实证研究:an empirical study based on L street in Beijing an empirical study based on efficiency and effectiveness an empirical study based on Wuling mountain area