https://biblioteca.cita-aragon.es/cgi-bin/koha/opac-search.pl?q=ccl=au%3AFr%C3%83%C2%B6hner%2C%20Eugenio%20and%20au%3AFarreras%2C%20Pedro&format=rss2 Search results for 'au:Fröhner, Eugenio and au:Farreras, Pedro' at 0 20