西南石油大学学报(社会科学版) ›› 2009, Vol. 2 ›› Issue (1): 104-108.DOI: 10.3863/j.issn.1674-5094.2009.01.021

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  • Received:1900-01-01 Revised:1900-01-01 Online:2009-01-20 Published:2009-01-20