[LIS-Forum] Usefulness of 336, 337, 338 - Physical Description, Etc. Fields

7 Oct 2013

      Dear Friends,

I would like to know the practical usefulness of three MARC21 tags of 
physical descriptions of 336, 337, 338.

Is there any other source apart from this source link. 
http://www.loc.gov/marc/

If anybody using these tags, please brief me.

Thanks

Narenthiran. R

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Narenderan