draft exchang letter uruguai european commun european commun agre includ final offer market access uruguai round addit quantiti thousand metric tonn high qualiti beef meat bovin anim fresh chill meat bovin anim frozen uruguai european commun uruguai agre provis contain tokyo round agreement european commun prepar envisag possibl uruguai export addit annual quantiti high qualiti beef quota cut fulli beneficiari countri ceas appli abovement provis ceas appli date addit quantiti thousand metric tonn implement