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On Tue, 2004-11-02 at 13:59, Bruce D'Arcus wrote:

>         <partdetails> <!-- specifics here are less important than a flexible,
> grouped, way to indicate page numbers and such -->
>               <detail unit="volume">2</detail>
>               <detail unit="issue">3</detail>
>         <partdetails>

A good model for the "parts" is Z39.50's Holdings schema. The thing with
"volume" and "issue" is that you really want to know the order, and when
you get into complex journal enumerations it can get very hairy. So
Z39.50 has:

   Level
   Caption
   Enumeration

I.e. level=1,caption=v.,enumeration=3
  for "v.3" when volume is the first (highest) level

If you want you could also spell out volume somewhere, but then you have
to learn the correct terminology for every language that you are going
to encounter. So for a journal in English you could have:
   level=1,caption=v.,enumeration=3
   level=2,caption=n.,enumeration=12

And in German it would be
   level=1,caption=Bd.,enumeration=3
   level=2,caption=T.,enumeration=12

This allows you to do things like:
   level=1,caption=n.,enumeration=324

   level=1,caption=v.,enumeration=56
   level=2,caption=pt.,enumeration=B
   level=3,caption=n.,enumeration=7

It's very flexible, and you are maintaining the order explicitly which
is what will help you link to someone else's statement which might read:
56(B)7. And your citation in German can link to the same citation even
if one party has chosen to "translate" the captions.

Page numbers need to be given their own data element, and as I said
before you need to specify whether you just have the starting page
number or whether you have a range. This disambiguates a page statement
like "17", which could be the start of a long article, or a single-page
article. This distinction is important for requesting items from
services like interlibrary loan, but is also useful for the person who
wants a substantial article (or the one who is looking for a "quickie"
;-)

kc
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Karen Coyle
Digital Library Specialist
http://www.kcoyle.net
Ph: 510-540-7596 Fax: 510-848-3913
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