【1】D W. Issues in conduction research[M]. Ames: The Lowa State University Press, 1982:97-121.<br>
【2】Granovetter M S. The strength of weak ties[M]. 1973.<br>
【3】Freeman L C, Roeder D, Mulholland R R. Centrality in social networks: ii. experimental results[J]. Social Networks, 1979, 2(2): 119-141.<br>
求附件,应该是问卷(量表),有酬以100,价位可议


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