Barron's DAT prep book

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Thought it was good for the PAT section. The other sections weren't too helpful because they lacked some depth to their reviews and I found numerous mistakes on the practice exams.
 
I will say that Barron's AP Bio was a good resource.

My roommate was studying for the MCAT and had the Kaplan MCAT study cards. I borrowed them for bio and would review them on the bus; I thought they were okay.