commiss decis june amend commiss decis eec set scientif committe design origin geograph indic certif specif charact ec commiss european commun regard treati establish european commun articl commiss decis eec decemb set scientif committe design origin geograph indic certif specif charact stipul committe proceed valid member present requir liabl prevent committe give opinion avoid inconveni committe proceed valid member present decid sole articl articl decis eec sentenc replac committe proceed valid member present brussel june commiss rené steichen member commiss oj