council decis februari conclus european econom commun interim agreement european econom commun european coal steel commun part republ hungari part trade trade relat matter eec council european commun regard treati establish european econom commun articl thereof regard propos commiss regard opinion european parliament pend entri forc european agreement sign brussel decemb approv interim agreement european econom commun european coal steel commun part republ hungari part trade trade relat matter sign brussel decemb decid articl interim agreement european econom commun european coal steel commun part republ hungari part trade trade relat matter annex protocol exchang letter declar approv behalf european econom commun text attach decis articl presid council give notif provid articl interim agreement behalf european econom commun brussel februari council presid vitor martin oj