Instruct: Classify Amazon reviews into positive or negative sentiment
Query: not useful as a reference work

The title is deceptive. First, the book only covers England. Second, title should not have the word "dictionary," which it is most definitely not. I think the author genuinely made an attempt to summarize all the British stuff. However, the entries are very limited in scope and do not give you enough information for further reading. The bibliography looks interesting. Citing his reference work in each entry might have saved this book.