council decis decemb conclus agreement form agre minut oil seed european commun argentina brazil canada poland sweden uruguai pursuant articl xxviii gener agreement tariff trade gatt ec council european union regard treati establish european commun articl conjunct articl thereof regard propos commiss gatt panel found commun support system oil seed effect reduc tariff concess grant commun gatt panel recommend commun act quickli elimin reduct tariff concess mutual satisfactori agreement reach negoti major gatt contract parti negoti right pursuant articl xxviii gatt agreement form agre minut put effect quickli agre deadlin met approv decid articl agreement form agre minut oil seed european commun argentina brazil canada poland sweden uruguai framework gener agreement tariff trade approv behalf commun text agreement attach decis articl presid council author design person empow sign agreement order bind commun articl decis publish offici journal european commun brussel decemb council presid clae date entri forc agreement publish offici journal european commun gener secretariat council