https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?q=ccl=Provider%3ACodex%20and%20au%3ACockcroft%2C%20John%20and%20holdingbranch%3AUGB%20and%20su-to%3ATECNOLOG%C3%83%C2%8DA&format=rss2 Search results for 'Provider:Codex and au:Cockcroft, John and holdingbranch:UGB and su-to:TECNOLOGÍA' at Biblioteca UGB 0 20