Publisher： 国家哲学社会科学学术期刊数据库

E-ISSN： 1671-9131|16|4|18-21

ISSN： 1671-9131

Source： 杨凌职业技术学院学报, Vol.16, Iss.4, 2017-01, pp. : 18-21

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