Kaplan Big Book for pcat??

[cuddlefish78]

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What is the kaplan big book? I am pre-pharm and have been researching pcat study guides. I have seen a lot of people refer to the kaplan big book but cant seem to find it online. What is it? Where can I find it? There is a kaplan book on amazon for around $25 but I am pretty sure that is not what people are talking about. Please help!