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Title: Patchy and frustrating
Review: The book is a recommended text for a Coursera on-line class on logic. Some bits are quite good, some are confusing and some are just impenetrable.My biggest complaint, though, is about the exercises provided. There are no answers in the book so you have no idea whether you have done the exercises correctly and, as a consequence, learn nothing from them. I found the book a waste of a considerable amount of money.
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