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Yes, actually they work with almost everything I have tried so far. Maybe I just don't come across books from the forementioned publishers, but provided that I'v purchased dozens of books, it is unlikely (I don't pay attention to who the publisher is, really, I just apply the code to the book). I've only had some troubles with the current promo coupons, in the sense that they appeared not to work at all on any book I tried (showing a message "Please, apply a valid promo code" or something like that, but I decided to proceed with the purchase anyway and it charged me the discounted price).
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