Export opening and concentration relationship

This is the data used in the paper "Do more open economies lead to export concentration? The case of selected agribusiness goods in Brazilian municipalities", unpublished.本数据集取自未发表论文《更开放的经济体是否会引发出口集中度（export concentration）提升？巴西各市镇内选定农业综合产品（agribusiness goods）的案例研究》