https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Estupi%C3%83%C2%B1%C3%83%C2%A1n%20Gait%C3%83%C2%A1n%2C%20Rodrigo%22%20and%20holdingbranch%3AUSU%20and%20su-to%3AADMINISTRACI%C3%83%C2%93N%20DE%20EMPRESAS&format=rss2 Search results for 'au:"Estupiñán Gaitán, Rodrigo" and holdingbranch:USU and su-to:ADMINISTRACIÓN DE EMPRESAS' at Biblioteca UGB 0 20