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The GBDC2015-1.cgb book is a combination between lines from the GBSelect2014.cgb, GBDC122013.cgb and DC UltraFair.cgb books that meet Dann Corbit's strict criteria.
There are 393 opening lines in this book.
Download link - http://kirill-kryukov.com/chess/discussion-board/download/file.php?id=33678