commiss regul eec amend regul eec recognit produc group hop commiss european commun regard treati establish european econom commun regard council regul eec juli common organ market hop amend council regul eec decemb articl thereof council regul eec novemb amend regul eec common organ market hop amend articl permit produc group aid measur lead greater concentr suppli greater market stabil market entir product member measur mean product improv adapt requir market commiss regul eec rule applic articl adapt measur provid regul accord opinion manag committe hop adopt regul articl articl cc insert word market stabil measur measur improv adapt product market requir articl regul enter forc dai public offici journal european commun regul bind entireti directli applic member state brussel commiss fran andriessen vice presid oj oj oj oj