biblioklept

biblioklept, biblioclept 1. A book thief or someone who steals books. 2. Besides the direct biblioklept there is the indirect thief who borrows and never returns books to their proper owners (including a library). Here is a news article about a bibliokleptomaniac.
Found on http://www.wordinfo.info/words/index/info/view_unit/2525/

biblioklept

book-thief
Found on http://phrontistery.info/b.html
No exact match found