deb-src http://snapshot.debian.net/archive/2007/05/03/debian unstable main contrib non-free
deb-src http://snapshot.debian.net/archive/2007/05/10/debian unstable main contrib non-free
deb-src http://snapshot.debian.net/archive/2007/05/13/debian unstable main contrib non-free
-deb-src http://snapshot.debian.net/archive/2007/04/17/debian unstable main contrib non-free
+deb-src http://snapshot.debian.net/archive/2007/05/17/debian unstable main contrib non-free
deb-src http://snapshot.debian.net/archive/2007/04/30/debian unstable main contrib non-free