Publisher： 国家哲学社会科学学术期刊数据库

E-ISSN： 1674-0106|volume|5|15-18

ISSN： 1674-0106

Source： 统计与咨询, Vol.volume, Iss.5, 2017-01, pp. : 15-18

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