Re: [BIBFRAME] Input screens On 1/18/13 1/18/13 • 9:24 AM, "Ross Singer" <[log in to unmask]> wrote:

How often, on aggregate, is the 100 or 700 $4 or $e used?  Since I've parsed a lot of MARC records, I can tell you.  Not much (and the inconsistency of the $e makes this even less useful).

I can tell you exactly, as of December 1, 2012 in WorldCat:

Total number of records: 287,229,344
Total occurrences of a 700 field:
Total occurrences of 700 $4: 24,908,408
Total occurrences of a 700 $e: 14,117,538