Publisher： 国家哲学社会科学学术期刊数据库

E-ISSN： 1006-9925|28|2|31-33

ISSN： 1006-9925

Source： 河北科技图苑, Vol.28, Iss.2, 2015-01, pp. : 31-33

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