https://biblioteca.uaysen.cl/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Portis%2C%20Alan%20M.%2C%22&format=rss2 4 0 50 ISBN 9788429192353 https://biblioteca.uaysen.cl/cgi-bin/koha/opac-detail.pl?biblionumber=291023 By Portis, Alan M.,. . 1 online resource : 9788429192353

]]> https://biblioteca.uaysen.cl/cgi-bin/koha/opac-detail.pl?biblionumber=291023 ISBN 9788429192360 https://biblioteca.uaysen.cl/cgi-bin/koha/opac-detail.pl?biblionumber=291024 By Portis, Alan M.,. . 1 online resource : , Includes bibliographical references and index. 9788429192360

]]> https://biblioteca.uaysen.cl/cgi-bin/koha/opac-detail.pl?biblionumber=291024 ISBN 9788429192353 https://biblioteca.uaysen.cl/cgi-bin/koha/opac-detail.pl?biblionumber=336106 By Portis, Alan M.,. . 1 online resource : 9788429192353

]]> https://biblioteca.uaysen.cl/cgi-bin/koha/opac-detail.pl?biblionumber=336106 ISBN 9788429192360 https://biblioteca.uaysen.cl/cgi-bin/koha/opac-detail.pl?biblionumber=336107 By Portis, Alan M.,. . 1 online resource : , Includes bibliographical references and index. 9788429192360

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