Instruct: Classify a review as either positive or negative.
Query: A great read.

I'd give this five stars but it is some time since this book was published, and the illustrations/photographs (although extensive) are b&w; and slightly fuzzy by totay's standards. I agree too with the reviewer who said that the photos were sometimes several pages away from the relevant text, but I think that is manageable, and caused by the fact that there are a lot of photos, and sometimes one paragraph of text describes several pages of photos. The text would be a sentence per page if it was more closely linked.The content is superb. I learned a lot and it was all explained clearly.The book is well written by someone who knows how to explain things. I recommend it highly.