Download or read book An Annotated List of the Important North American Forest Insects written by and published by . This book was released on 1930 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The investigations by the United States Government of the insects affecting forest trees, forest products, and shade trees are centered in the division of forest insects of the Bureau of Entomology. The investigations carried on by the division are grouped for administrative convenience into projects, the most important of which are briefly described in the following paragraphs.