decis repres govern member state meet council decemb nomenclatur rate convent duti product gener rule interpret appli nomenclatur duti ecsc repres govern member state european coal steel commun meet council decid articl januari custom nomenclatur common member state convent duti applic respect product come treati establish european coal steel commun shown council regul eec juli tariff statist nomenclatur common custom tariff nomenclatur duti refer interpret appli provid preliminari provis combin nomenclatur cn reproduc annex regul articl decis ecsc repeal articl member state measur requir implement decis brussel decemb presid wilhjelm oj oj