https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?q=ccl=Provider%3AS%C3%83%C2%ADntesis%20and%20holdingbranch%3AUSU%20and%20location%3AGEN%20and%20au%3APlaza%20Guti%C3%83%C2%A9rrez%2C%20Juan%20Ignacio&format=rss2 Search results for 'Provider:Síntesis and holdingbranch:USU and location:GEN and au:Plaza Gutiérrez, Juan Ignacio' at Biblioteca UGB 0 20