council resolut decemb access commun public suppli contract product origin member countri council aim council direct eec decemb coordin procedur award public suppli contract enabl supplier commun compet contract equal term creat degre market transpar improv function common market sector contribut observ ban restrict free movement good implement direct increas commun determin condit public suppli contract award member state open product origin member countri condit safeguard interest member state produc enabl particip public contract award member countri connect commun aim achiev satisfactori degre reciproc negoti particip gatt oecd favour condit suitabl mean ensur object attain note member state continu appli accord provis treati exist commerci polici measur respect public suppli contract product categori product origin member countri note possibl refer commiss take protect measur articl treati ensur implement provis obstruct deflect trade oj consid place obtain balanc concess area question negoti take place oecd due place gatt aim invit commiss submit propos base articl treati agre independ result negoti promot propos commiss coordin progress standard polici refer