On Jan 18, 2013, at 1:11 PM, "Godsey-Bell, Connie F. (LNG-DAY)" <[log in to unmask]> wrote:

What percent of the total do the total occurrences represent? 

And what number of unique records have a 700 with a $4 or an $e?

Connie Godsey-Bell,
From: Bibliographic Framework Transition Initiative Forum [mailto:BIBFRAME@LISTSERV.LOC.GOV] On Behalf Of Tennant,Roy
Sent: Friday, January 18, 2013 12:42 PM
To: [log in to unmask]
Subject: 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