"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
You can get gnome-print tarballs from
http://ftp.gnome.org/pub/GNOME/sources/gnome-print/ for the stable branch.
Or
http://ftp.gnome.org/pub/GNOME/sources/libgnomeprint
http://ftp.gnome.org/pub/GNOME/sources/libgnomeprintui
for the GNOME 2.0 version.
How to get from cvs