科学分类
Scientific classification
reasonable classification
science categorize
学科分类导航
net resouces subject guide
学科分类与代码
classification and code of disciplines
教育程度及学科标准分类
standard classification of education attainments and fields of study
北京大学数学科学学院
department of information science
School of Mathematical Sciences
peking university
北京市环境保护监测中心；北京大学数学科学学院
beijing environmental protection monitoring centre
安徽农业大学管理科学学院
College of Management Science
anhui agricultural university