基于综合指数法和布拉德福定律的重要研究机构测定——以水路运输(U6)为例
기우종합지수법화포랍덕복정률적중요연구궤구측정——이수로운수(U6)위례
The Evaluation of Important Institutions Based on Comprehensive Index Method and Bradford's Law --Taking Waterway Transport~CLC:U6~ for Example