Publisher： 国家哲学社会科学学术期刊数据库

E-ISSN： 1009-1173|volume|1|38-43

ISSN： 1009-1173

Source： 中国农业教育, Vol.volume, Iss.1, 2016-01, pp. : 38-43

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