ccna books whats the difference

samxdsamxd Member Posts: 28 ■□□□□□□□□□
CCNA Preparation Library (7th Edition) (Self-Study Guide) (Hardcover)
by Stephen McQuerry (Author) 2008

CCNA Official Exam Certification Library (CCNA Exam 640-802) (Exam Certification Guide) (Hardcover) 2007
by Wendell Odom (Author)

seems to be the same stuff just newer publication and a difference author. does anyone recomend one over the other and is there a difference?

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