http://opac.ua.pt/cgi-bin/koha/opac-search.pl?&limit=mc-ccode%3A%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27MR%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27&limit=au%3AMelchior%2C%20Paul%20J&limit=su-to%3AMec%C3%83%C2%A2nica%20celeste&limit=se%3ACommunications%20de%20l%27Observatoire%20Royal%20de%20Belgique.&format=rss2 Search results with limit(s): 'mc-ccode:''''''''''''''''MR'''''''''''''''' au:Melchior, Paul J su-to:Mecânica celeste se:Communications de l'Observatoire Royal de Belgique.' at Bibliotecas UA 0 20