00875 2200169 4500245007100000020002100071250002200092700002100114650005500135005001900190260002800209041001200237084000800249300002700257500035600284490006500640 aIO International Organization winter 1991 volume 45 number 1hText aISSN : 0020 8183 aEdisi Winter 1991 aBates, H. Robert aIO International Organization winter 1991 volume 4 a20210403124119 aLondonbMIT pressc1990 aEnglish a060 a..., 142 hlm, :c23cm. aAn analysis of a small sample of countries shows that the higher the level of terms of trade risk that a nation faces in international markets, the more likely it is to increase barriers. The analysis also shows that the greater the availability of social insurance programs mounted by a nation's government, the less likely it is to block free trade. aIO International Organization winter 1991 volume 45 number 1