Publisher： 国家哲学社会科学学术期刊数据库

E-ISSN： 1008-7109|29|4|55-59

ISSN： 1008-7109

Source： 宁波工程学院学报, Vol.29, Iss.4, 2017-01, pp. : 55-59

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