https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?idx=an%2Cphr&q=591%26limit%3Dsu-to%3AF%C3%83%C2%8DSICA%26limit%3Dse%3AF%C3%83%C2%ADsica%20universitaria%26limit%3Dau%3ABenson%2C%20Harris&format=rss2 Search results for 'an,phr: 591&limit=su-to:FÍSICA&limit=se:Física universitaria&limit=au:Benson, Harris' at Biblioteca UGB 0 20