council decis conclus agreement form joint letter address director gener gatt european econom commun kingdom thailand negoti articl xxviii gatt sweet potato fall cn code intend human consumpt eec council european commun regard treati establish european econom commun articl thereof regard propos commiss prove adopt safeguard measur limit import commun sweet potato increas imbal commun cereal market condit made safeguard measur result imbal commun extern protect compet agricultur product replac safeguard measur long term chang import arrang sweet potato intend anim feed pursuant articl xxviii gener agreement tariff trade gatt commun notifi intent chang tariff concess sweet potato falll subhead common custom tariff cn code intend human consumpt commiss held negoti kingdom thailand articl xxviii gatt reach agreement thailand found satisfactori decid articl agreement form joint letter director gener gatt european commun kingdom thailand negoti articl xxviii gatt sweet potato fall cn code intend human consumpt approv behalf commun text agreement attach decis articl presid council author design person empow sign agreement order bind commun brussel council presid kiechl