宁夏大学专利统计与分析——以PIAS和Derwent Innovations Index为工具

张红燕

Patent Statistics and Analysis of Ningxia University Based on PIAS and Derwent Innovations Index

ZHANG Hong-yan

农业图书情报学刊 . 2016, (5): 61 -64 . DOI: 10.13998/j.cnki.issn1002-1248.2016.05.014