Upstream source can be downloaded from
http://search.cpan.org/dist/Class-Data-Inheritable/

Files: *
Copyright: (c) 2000-2005, Damian Conway and Michael G Schwern. All Rights Reserved.
License: GPL-1+|Artistic
 This module is free software. It may be used, redistributed and/or modified
 under the same terms as Perl itself.

Files: debian/*
Copyright: © 2002,2005,2007 Ivan Kohler <ivan-debian@420.am>
           © 2008 Debian Perl Group <debian-perl@lists.debian.org>
License: other
 It is assumed that all debian maintainers want to license their work under
 terms, compatible with upstream's licensing

On Debian GNU/Linux systems, the complete text of the GNU General Public
License can be found in `/usr/share/common-licenses/GPL' and the Artistic
Licence in `/usr/share/common-licenses/Artistic'.