This book draws together information on most of the organisms associated with woody plants in Colorado and nearby areas of the Central Rockies. Insects, mites, viruses, bacteria, fungi, parasitic plants, and vertebrates are all covered. Organisms are grouped according to the area of the plant where they are most commonly found (on foliage, on twigs, on the trunk, etc.). A diagnostic key is included, to assist in identifications. This key is mostly organized by plant species, with subsections on plant parts, and then smaller units on symptoms. Annotation c. Book News, Inc., Portland, OR (booknews.com)