]]> http://bibliotecas.utl.pt:443/cgi-bin/koha/opac-detail.pl?biblionumber=3256 ISBN 0133148998 http://bibliotecas.utl.pt:443/cgi-bin/koha/opac-detail.pl?biblionumber=3475 By Aström, Karl J.. Upper Saddle River, NJ : Prentice Hall, 1997 0133148998

]]> http://bibliotecas.utl.pt:443/cgi-bin/koha/opac-detail.pl?biblionumber=3475 ISBN 0201097206 | 0201097206 http://bibliotecas.utl.pt:443/cgi-bin/koha/opac-detail.pl?biblionumber=4999 By Åström, Karl J.,. Reading, MA : Addison-Wesley, 1989 . xiv,526p 0201097206 | 0201097206

]]> http://bibliotecas.utl.pt:443/cgi-bin/koha/opac-detail.pl?biblionumber=4999 ISBN http://bibliotecas.utl.pt:443/cgi-bin/koha/opac-detail.pl?biblionumber=29297 By Astrom, Karl J.. New York : Academic Press, 1970 . xi, 299 p : 24 cm.

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