中文    English
Specific Example and Enlightenment of GIS as the Content of Library Subject Service
ZHANG Xuan, ZHANG Wenzhong, TIAN Yongchao
农业图书情报学刊 . 2017, (10): 13 -16 .  DOI: 10.13998/j.cnki.issn1002-1248.2017.10.003