Publisher： 国家哲学社会科学学术期刊数据库

E-ISSN： 1674-7046|26|6|68-72

ISSN： 1674-7046

Source： 河南城建学院学报, Vol.26, Iss.6, 2017-01, pp. : 68-72

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