https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?idx=an%2Cphr&q=30%26limit%3Dholdingbranch%3AUSU%26limit%3Dau%3AUniversidad%20Doctor%20Andr%C3%83%C2%A9s%20Bello%2C&format=rss2 Search results for 'an,phr: 30&limit=holdingbranch:USU&limit=au:Universidad Doctor Andrés Bello,' at Biblioteca UGB 0 20