Extension of the period of validity of the shortlists drawn up following open competitions Council/A/281, Council/A/288, Council/A/319, Council/LA/287, Council/ LA/301, Council/LA/302, Council/LA/321, Council/LA/328, Council/LA/330, Council/B/279, Council/B/312, Council/C/298, Council/C/306, Council/C/311, Council/C/324, Council/C/326, Council/C/327, Council/C/329, Council/C/315, Council/C/322, Council/D/308 and Council/D/311