California Physical Science Reading & Notetaking Guide Help?

Ok so i want to buy the Pearson Prentice Hall reading and note taking guide but apparently there are two different levels, level A and level B, what is the difference? Where can i buy both?

Thanks!California Physical Science Reading %26amp; Notetaking Guide Help?
buy that online , it is much cheaper for you

and here is a website that can help you to find that

with low price

http://www.where-to-buy-anything-online.鈥?/a>

hope that help you

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