الفهرس 
المقدمةيوجد فقط 14 صفحة متاحة للعرض العام
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المستخلص
The study aims studying the present situation of important exported crops; rice, potatoes, oranges and fennel. Foreign trade structures, geographical distribution of their exports are also made. Moreover, market share and the degree of competitiveness of such exports are also examined. The study contains five chapters; the first reviews previous studies related tot he present study. They second chapter includes present situation of exports of crops selected during the period 1996-2004. The third chapter examines the effect of exports on gross national products during the period 1985-2004. Such effect was statistically significant. As for the share of the studied exports in the international market. The fourth chapter examines the degree of competition for the selected common ditties using measures such as, market share, relative import price, strength dependence of the exporting operation. Using market share criteria. The fifth chapter deals with the quantitative analytical effects of rice, potatoes, orange and fennel seeds exports upon the product of agriculture sector by using a model named Simultaneous Equation Model.