Publisher： 国家哲学社会科学学术期刊数据库

E-ISSN： 1009-2080|29|6|105-108

ISSN： 1009-2080

Source： 潍坊工程职业学院学报, Vol.29, Iss.6, 2016-01, pp. : 105-108

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next