00580nam a2200145Ia 4500008004100000082001500041100002000056245010400076260003800180300000900218490011500227600003900342600002100381650003200402140224s9999    xx            000 0 und d  a382(77) M6  aZietz, Joachim.  aThe costs of protectionism to developing countries; an analysis for selected agricultural products/  aWashington D.C.bWorld Bankc1986  a90p.  aWorld Bank Staff on International Papers no.769; Series on International Capital and Economic Development no.1  a Joachim Zietz and Alberto Valdes.  aValdes, Alberto   aAgricultural products-price