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Title: Horrid
Review: Easily the worst textbook I encountered during my undergraduate years. Unfocused, sparse, and almost completely lacking example problems. Riggs touches briefly on lots of topics and treats none of them completely, leaving the reader lacking any notion of how process control actually works in real life. I'm not a big fan of the book by Seborg et al. either, but if you have to choose between the two, go with Seborg.
