I am trying to add "1 online resource" to the 300 $a of the records in 
an ebook marc file. The problem is that some records in the file already 
have "1 online resource" in the 300$a, so the regex I've been using adds 
the phrase again. For example:

300 $a 1 online resource (34 p.) $b ill.
300 $a 1 online resource (1 online resource (74 p.)) $b ill.

Is there a way to use the "Perform find/replace if..." function to 
exclude the records that already have "1 online resource" in the 300$a?

Thanks for any help with this,


Miriam C. Nauenburg
Serials and Electronic Resources Cataloger
Ingram Library
University of West Georgia
Carrollton, GA 30118
Phone: (678) 839-5327
FAX: (678) 839-6511

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