Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Beautiful and useful

If you are used to books with line drawing of leaves that make it impossible to use as a reference, then you will love this book. It is a great study as well as a beauty. If you only have one book on the Oaks of California, this should be it. If you have many books on Oaks, this is still going to be one of the most used. Useful and beautiful!