http://biblioteca.cunori.edu.gt/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Edgardo%20Alexander%20Calderon%20Guzman%22&sort_by=relevance&format=rss 2 0 50 ISBN: http://biblioteca.cunori.edu.gt/cgi-bin/koha/opac-detail.pl?biblionumber=725 By Edgardo Alexander Calderon Guzman.
Chiquimula CUNORI 2021 .
386p. :

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]]> http://biblioteca.cunori.edu.gt/cgi-bin/koha/opac-detail.pl?biblionumber=725 ISBN: http://biblioteca.cunori.edu.gt/cgi-bin/koha/opac-detail.pl?biblionumber=741 By EDGARDO ALEXANDER CALDERÓN GUZMÁN.
Chiquimula, Guatemala. USAC, CUNORI. 2020 .
312p. :

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]]> http://biblioteca.cunori.edu.gt/cgi-bin/koha/opac-detail.pl?biblionumber=741