1983-2117 1983-2117 S1983-21172003000200139 10.1590/1983-21172003050206 United Kingdom 00 12 2003 00 12 2003 5 2 139 154

18 53-85 72 260 260 47-63 DES/WELSH OFFICE DES/WELSH OFFICE 340 11-4 5 14-4 14 33-362 1-10 1 1-14