[MinervaCats] 521 field

[Okrent, Valerie P.]

I see a 521 field in a lot of bib records that have something like this: 750|bLexile. I just wanted to know what that means and if it is supposed to be there?
 
Thanks,
 
Valerie Okrent
Interlibrary Loan Department
Central Maine Community College
(207)755-5335
vokrent at cmcc.edu
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