Maintainers for mclibs are Debian Science Maintainers <debian-science-maintainers@lists.alioth.debian.org>.
You may want to refer to the following individual bug pages: cernlib-montecarlo, libcojets2-dev, libcojets2-gfortran, libeurodec1-dev, libeurodec1-gfortran, libherwig59-2-dev, libherwig59-2-gfortran, libisajet758-3-dev, libisajet758-3-gfortran, libpdflib804-2-dev, libpdflib804-2-gfortran, libphotos202-1-gfortran, libphotos202-dev, libphtools2-dev, libphtools2-gfortran, montecarlo-base, montecarlo-data.
You might like to refer to the mclibs package page, or to the Package Tracking System.
If you find a bug not listed here, please report it.