<p>I'm thinking about getting both the Barron's and Princeton Review AP Chem review books. Does it matter if I get an older edition like the 2007 or 2008 or should I get the 2011 editions?</p>
<p>I'm thinking about getting both the Barron's and Princeton Review AP Chem review books. Does it matter if I get an older edition like the 2007 or 2008 or should I get the 2011 editions?</p>