/usr/share/doc/ is in libmath-symbolic-perl 0.612-2.
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/usr/share/doc/libmath-symbolic-perl/
/usr/share/doc/libmath-symbolic-perl/changelog.Debian.gz
/usr/share/doc/libmath-symbolic-perl/copyright
/usr/share/doc/libmath-symbolic-perl/examples/
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/usr/share/doc/libmath-symbolic-perl/TODO