【求助】文献Bela Balassa,1965, “trade liberalizatin and revealed comparative advantage", the Manchester School of Economic and Social Studies, vol. 33, no. 2 May , pp.99-124, thanks。
Balassa的这篇文献从Ebsco和Springer中都没有找到,看来只能到JSTOR中查找了,可是我们学校太小,没有呀,哪位大虾帮帮忙吧!谢谢了