Chem, Gov, Calc Books?

<p>I'm taking AP Chem, Gov (both comparative and normal), and Calculus BC APs this year. What are some good books that helped you guys get 5s on the AP for any of these? Thank You.</p>

<p><em>bump</em></p>

<p>10char</p>

<p>Man I just realized there was a sticky above XD</p>