Download or read book Principles of Forest Entomology written by Samuel Alexander Graham and published by . This book was released on 1939 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historical review. Biotic potential. Environmental resistance. Insect abundance. Direct control of tree insects. Direct control by chemical methods. Indirect control of tree insects. Other indirect control measures. Leaf-eating insects. Meristem insects of the terminal parts. Phloem-wood insects. Wood destroyers. Sap-sucking insects. Insectivorous parasites. Insectivorous predators. Other relations of forest insects.