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Introduction to Logic: Predicate Logic (Second Edition) and Introduction to Logic: Propositional Logic (Revised Third Edition) by Howard Pospesel. Predicate logic has a coffee or drink stain on one edge.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.