council decis decemb conclus agreement form exchang letter european econom commun republ hungari amend exchang letter transit replac exchang letter land transport infrastructur sign brussel decemb eec council european commun regard treati establish european econom commun articl thereof regard propos commiss regard opinion european parliament regard opinion econom social committe exchang letter european econom commun republ hungari transit amend exchang letter european econom commun republ hungari land transport infrastructur sign brussel decemb time europ agreement interim agreement replac agreement form exchang letter negoti end approv decid articl agreement form exchang letter european econom commun republ hungari amend exchang letter transit replac exchang letter land transport infrastructur sign brussel decemb approv behalf commun text agreement form exchang letter attach decis articl presid council give notif provid agreement brussel decemb council presid hurd oj oj