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%27%27MDF%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27%27&limit=au%3ABerg%2C%20Alban%2C&limit=au%3AB%C3%83%C2%BCchner%2C%20Georg%2C&format=rss2 Search results with limit(s): 'mc-ccode:'''''''''''''''''MDF''''''''''''''''' au:Berg, Alban, au:Büchner, Georg,' at Bibliotecas UA 0 20