The deal gives DC's books, which are being made available digitally for the first time, the advantage of being part of Amazon's huge marketing push for the Kindle Fire.
Barnes & Noble said it had a policy to not put books that are available on other digital platforms, but not its Nook e-reader, in its 1,341 stores.
"We will not stock physical books in our stores if we are not offered the available digital format," chief merchant Jaime Carey said in a statement. "To sell and promote the physical book in our store showrooms and not have the ebook available for sale would undermine our promise to Barnes & Noble customers to make available any book, anywhere, anytime."
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