Instruct: Classify the given review into positive or negative sentiment.
Query: Good general information, disappointing textbook

While the book contains a lot of useful general information about Fixed Income securities, as a textbook it was a disappointment.The author assumes that the readers are familiar with some terms and concepts - a definite no for a beginners' textbook which this one attempts to be. I lost a homework grade once because the same parameter was referred to as DV01 throughout the chapter, but called DVBP in the following problems. Sure, for someone in the industry it's a no-brainer, but most people who are trying to solve the problems are not in the industry.I was reluctant to write this review because I heard some praise of the book and its author from several people, but here's something to consider: after nine years in the industry, whenever I had a question related to fixed income securities this book was of no help answering it. Need I say more?