annex agreement form exchang letter amend agreement european econom commun swiss confeder applic rule commun transit letter commun brussel sir eec switzerland joint committe commun transit propos recommend amend agreement european econom commun swiss confeder applic rule commun transit propos amend annex hereto honour inform commun agreement amend propos enter forc januari grate confirm agreement swiss confeder amend date propos entri forc accept sir assur highest consider behalf council european commun letter swiss confeder brussel sir honour acknowledg receipt letter todai date read eec switzerland joint committe commun transit propos recommend amend agreement european econom commun swiss confeder applic rule commun transit propos amend annex hereto honour inform commun agreement amend propos enter forc januari grate confirm agreement swiss confeder amend date propos entri forc honour confirm agreement swiss confeder content letter subject notif conclus nation procedur laid constitut accept sir assur highest consider swiss confeder