Title: Aphids on the world's trees
Subjects: Aphididae, Diseases and pests, Host plants, Trees, Insects (entomology), Pest control, Plant pathology & diseases, Plant Parasitology, Reference, Children's All Ages - Science, Agriculture - Forestry, Life Sciences - Zoology - Entomology, Science / Entomology, Personal & Practical Guides, Plant diseases, Aphids