https://ueb.serviciokoha.com/cgi-bin/koha/opac-search.pl?q=ccl=an%3A6486&sort_by=title_dsc&format=rss 3 0 50 ISBN:9978453563 https://ueb.serviciokoha.com/cgi-bin/koha/opac-detail.pl?biblionumber=11861 By Villalba Avilés, Carlos.
Quito, Ecuador : Sureditores, 2006 .
96 páginas ; , Incluye índice. 29 cm..
9978453563

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]]> https://ueb.serviciokoha.com/cgi-bin/koha/opac-detail.pl?biblionumber=11861 ISBN:9978445137 https://ueb.serviciokoha.com/cgi-bin/koha/opac-detail.pl?biblionumber=20663 By Villalba Avilés, Carlos.
Ecuador : CRVA 2012 .
162 paginas 9978445137

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]]> https://ueb.serviciokoha.com/cgi-bin/koha/opac-detail.pl?biblionumber=20663 ISBN:9978432116 https://ueb.serviciokoha.com/cgi-bin/koha/opac-detail.pl?biblionumber=11702 By Villalba Avilés, Carlos.
Quito: Sureditores, 2006 .
173 páginas ; 29 cm..
9978432116

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