http://opac.ua.pt/cgi-bin/koha/opac-search.pl?&limit=mc-ccode%3A%27%27%27%27%27%27MR%27%27%27%27%27%27&limit=su-to%3ATeoria%20dos%20n%C3%83%C2%BAmeros&limit=au%3AMordell%2C%20L.%20J&format=rss2 Search results with limit(s): 'mc-ccode:''''''MR'''''' su-to:Teoria dos números au:Mordell, L. J' at Bibliotecas UA 0 20