Publisher： 国家哲学社会科学学术期刊数据库

E-ISSN： 1002-1248|29|2|79-82

ISSN： 1002-1248

Source： 农业图书情报学刊, Vol.29, Iss.2, 2017-01, pp. : 79-82

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