Answered By: ask crisslibrary
Last Updated: May 06, 2015     Views: 17

This link from the Library of Congress is a good introduction to the concept:  http://www.loc.gov/publish/cip/.  If you want more detail, you can find it here:  http://www.thebookdesigner.com/2010/03/cip-what-it-means-how-to-read-it-who-should-get-it/.

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