council direct decemb amend direct eec approxim law member state relat unit measur eec council european commun regard treati establish european econom commun articl thereof regard propos commiss regard opinion european parliament regard opinion econom social committe intern level definit si unit measur length amend gener confer weight measur cgpm definit commun level recommend world health organ request millimetr mercuri retain addit kilopasc unit measur pressur blood bodi fluid advis commun adopt solut barn unit univers measur effect cross section area occas nuclear reaction experi shown specif unit easili replac si unit author nuclear field direct eec amend adopt direct articl annex direct eec amend point chapter definit unit length replac unit length metr length path travel vacuum light second seventeenth cgpm resolut section chapter ad tabl quantiti unit symbol blood pressur pressur bodi fluid millimetr mercuri mm hg mm hg pa effect cross section area barn note replac prefix symbol list conjunct unit symbol except millimetr mercuri symbol multipl call quot hectar quot chapter ii unit measur blood pressur tabl delet note replac prefix symbol list chapter conjunct unit symbol except symbol quot quot articl member state bring forc law regul administr provis compli direct juli forthwith inform commiss thereof articl direct address member state brussel decemb council presid bruton oj oj oj oj