Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Disappointment
Review: I was very disappointed with this "book." I felt the variety of trees found in this collection to be far too minimal. If you plan on learning about trees in the winter, good luck. The primary method for identification is based on leaves. Although you can identify trees based on bark, etc. it would take hours with this manual. Also, it is far to bulky and awkward to comfortably carry along on a hike.
