council decis octob conclus vienna convent protect ozon layer montreal protocol substanc deplet ozon layer eec council european commun regard treati establish european econom commun articl thereof regard propos commiss regard opinion european parliament regard opinion econom social committe commun member state sign march vienna convent protect ozon layer establish continu emiss chlorofluorocarbon halon current level signific damag ozon layer intern consensu signific reduct product consumpt substanc decis eec eec provid control limit effect cover substanc cfc cfc protocol supplementari vienna convent montreal protocol substanc deplet ozon layer negoti adopt septemb protocol sign commun member state protect promot improv environ bring forc vienna convent montreal protocol base principl prevent action avoid damag ozon layer scientif technic data time adopt end commun approv convent protocol commun contract parti protocol provis carri commun member state contract parti order oblig convent protocol appropri carri member state contract parti provis protocol articl appli commun member state parti protocol member state conclud rapidli procedur access ratif convent protocol view permit deposit simultan instrument approv accept ratif access commun member state adopt decis articl vienna convent protect ozon layer montreal protocol substanc deplet ozon layer approv behalf commun text convent protocol annex decis articl presid council deposit act approv vienna convent montreal protocol behalf commun secretari gener unit nation accord articl vienna convent read conjunct articl montreal protocol time presid deposit statement compet set annex ii decis accord articl vienna convent read conjunct articl montreal protocol articl member state latest octob step permit deposit simultan instrument ratif accept approv access vienna convent commun member state member state inform commiss decis acced ratifi convent prospect date final procedur commiss cooper member state arrang date simultan deposit instrument case januari member state step permit deposit simultan januari instrument ratif accept approv montreal protocol commun member state member state inform commiss novemb decis ratifi prospect date final ratif procedur commiss cooper member state arrang date simultan deposit instrument case januari articl decis address member state luxembourg octob council presid papandr oj oj oj oj