On Thu, 11 Aug 2005 07:07:20 +1000, David Gerard wrote:
I can imagine cases where, in a given field, one vendor's catalogue numbers might be useful to list.
Music (e.g. BWV) and Astronomy comes to mind, for example.
Though those are cases where what were originally one "vendor"'s numbers have become a (de facto, at least) standard.
--Ph.