https://biblioteca.uaysen.cl/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Bustamante%2C%20Guillermo%2C%22&format=rss2 6 0 50 ISBN https://biblioteca.uaysen.cl/cgi-bin/koha/opac-detail.pl?biblionumber=268747 . 1 online resource :

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