https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?idx=an%2Cphr&q=277%26limit%3Dau%3ARoth%2C%20Walton%20T%26limit%3Dholdingbranch%3AUGB&format=rss2 Search results for 'an,phr: 277&limit=au:Roth, Walton T&limit=holdingbranch:UGB' at Biblioteca UGB 0 20