On May 9, 2012, at 11:27 AM, Madrigal, Juan A wrote:

> I'm thinking that one way  to accomplish this is via Z39.50 and send a query to the backend that powers WebOPAC

Juan,

I just did a search for this and grab this from OCLC. It looks like the search is 5017/word, phrase and the (OCLC's) marc tag is the 852/hij. You might have to see what field you system indexes (050). I haven't tried it with YAZ but it should work. 

--
Brian Kennison
Haas Library
Western Connecticut State University