council decis april signatur commun reserv ratif convent custom treatment pool contain intern transport geneva januari ec council european union regard treati establish european commun articl thereof conjunct sentenc articl regard propos commiss convent custom treatment pool contain intern transport hereinaft call convent negoti auspic unit nation sign geneva januari seek promot effici contain intern transport facilit administr procedur view reduc transport empti unit articl convent signatur region econom integr organ light major practic advantag econom oper convent approv sign commun reserv ratif convent nonetheless accept reserv reflect constraint pertain custom union current level harmon regard import export spare part repair contain accessori equip commun contract parti convent abovement reserv decid articl convent custom treatment pool contain intern transport approv reserv behalf commun matter fall exclus compet text convent commun reserv enter thereto annex ii text notif provid articl convent appear annex iii articl presid council author design person empow sign reserv ratif convent order bind commun proce notif provid articl convent luxembourg april council presid rossi