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X-ND-MTA-Date: Mon, 06 Aug 2007 16:01:31 EDT
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The U.S. National Library of Medicine uses 650/651 first indicator
coding on MeSH headings all the time. Though they're the only ones
I know of who do.
--On Monday, August 06, 2007 10:03 AM -0700 Karen Coyle
<kcoyle_at_KCOYLE.NET> wrote:
> Doesn't seem to be used. I just looked at some random records in
> MELVYL
> and all of the 650's are coded "0" for "no level specified."
> Anyone know
> what community uses this?
>
> kc
>
> Mark Ehlert wrote:
>> Karen Coyle wrote in part:
>>> I could see a value for "overall scope" subject headings, and
>>> "also has something
>>> about" subject headings -- coded differently so you could
>>> search at different levels. Mann contracts "overall scope" with
>>> keyword searching, but as you show below, there could be levels
>>> in between those two that are useful.
>>
>> MARC21 has this, sorta, but doesn't go far enough with it, in my
>> opinion. The first indicator in the 650 field, for instance,
>> includes coding for ranking of subjects as primary and
>> secondary. Sadly, few of the other 6XX have this feature.
---------------------------------------
Jeff Taylor
Cataloging & Authorities Team
Vanderbilt University Library
Email: jeff.taylor_at_vanderbilt.edu
Received on Mon Aug 06 2007 - 13:51:01 EDT