https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?q=ccl=Provider%3AAlfaomega%20Grupo%20Editor%2C%20and%20holdingbranch%3AUSU%20and%20su-to%3AMATERIAL%20AUDIO-VISUAL%20and%20su-to%3APSICOLOG%C3%83%C2%8DA%20DEL%20TRABAJO&format=rss2 Search results for 'Provider:Alfaomega Grupo Editor, and holdingbranch:USU and su-to:MATERIAL AUDIO-VISUAL and su-to:PSICOLOGÍA DEL TRABAJO' at Biblioteca UGB 0 20