https://biblioteca.uaysen.cl/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Varela%20B.%2C%20Edgar%22&format=rss2 10 0 50 ISBN 9789585144361 https://biblioteca.uaysen.cl/cgi-bin/koha/opac-detail.pl?biblionumber=209031 . 1 recurso en línea 9789585144361

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