Hi

EUIG readers - forgive the duplication of this message with the Innopac
Users List.

I would welcome advice from any sites using two topical subject schemes (in
our case, MeSH and LCSH). I would be interested to know whether you have
separate indexes, and also how you index other subject fields. In our case,
we do not use strings or rotated indexing. We put in geographics as separate
headings (as 651), and we use a local field for time periods. And we input
genres into 655. The point is that - take an example - a 651 might appear in
a bib containing MeSH headings, or LCSH headings, or neither. So might a
time period, and so might a 655.

I am simply unsure whether we need to maintain separate indexes for the
latter three types; or a combined one for them; or there has even been a
suggestion that they should not be indexed separately at all, but included
in both the topical indexes, i.e. duplicated and indexed in both.

There are also of course repercussions for searching, and for putting some
of these options in at the opening screen versus making them limits.

Any examples you might give of your own practices and especially links to
your OPAC would be great.

As yet we have no authorities loaded. If the same authority is loaded in two
indexes, does it have to be maintained twice over (e.g. when amending,
adding crossrefs?) My question also applies to names when they are loaded
both in author and in subject indexes.

Paul Davey
Cataloguing Services Manager
Collection Management
Wellcome Library
183 Euston Road
London NW1 2BE
(+44) 020-7611-8493
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