Good points, all.  RLIN has a similar macro.

Mary Jane Cuneo
Serials cataloging &  NACO
Fine Arts Library
Harvard University

On 3/6/2006 2:59 PM, Adam Schiff wrote:

> I agree with Manon and Gary that it's inadvisable to omit this 670, 
> for the reasons they so clearly articulated.  I hazard to guess that 
> most of the authorities we create (at least, in OCLC, with which I'm 
> most familiar) are initially generated through the use of a macro run 
> on a heading on a bibliographic record, so that it really isn't much 
> extra work to have that 670 anyway.
>
> Adam
>
>