西南石油大学学报(社会科学版) ›› 2012, Vol. 14 ›› Issue (4): 21-24.DOI: 10.3863/j.issn.1674-5094.2012.04.005

• 经济学与管理学 • Previous Articles     Next Articles

  

  • Received:1900-01-01 Revised:1900-01-01 Online:2012-07-01 Published:2012-07-01