2003~2012年国际资源性商品贸易格局的社会网络分析——以煤炭、焦炭为例
2003~2012년국제자원성상품무역격국적사회망락분석——이매탄、초탄위례
A Social Network Analysis of International Trade Patterns of Resource Commodities Based on the 2003-2012 Trade Data of Coal and Coke