Radcliffe's IPM World Textbook, the University of Minnesota's electronic IPM textbook featuring chapters contributed by internationally recognized experts from around the world. The documents include text and photographs.

Database of IPM Textbooks (DIT)
Useful information about IPM textbooks from all over the world. The DIT Search Engine can be used to find IPM textbooks that contain information on a particular topic.

The National Park Service IPM Manual. The Parks IPM Manual provides descriptions of the biology and management of 21 species or categories of pests. Unusual topics include pests of museums and weeds of developed and historical sites. Since implementing an IPM program in the early 1980's, the Park Service has reduced pesticide use by over 60 percent.

Compendium of IPM Definitions (CID)
Definitions of IPM with citations from literature published worldwide. The chronological sequence of these definitions elucidates how IPM evolved into a sophisticated system approach. The definitions are presented in 'decade' units.

Pest Identification databases

Common Weeds of No-Till Cropping Systems - Purdue University
The switch from conventional tillage to no-tillage cropping systems generally creates a shift in weed species. Over time, small-seeded annual broadleaf weeds and perennial weeds become more prevalent. This Web site displays information and images of common weeds found in reduced and no-tillage cropping systems. Each weed is described by its scientific name, life cycle, a mature image, an immature image, a unique feature image, and control options.

The Tree of Life. This is a comprehensive web hosted by the University of Arizona, but housed on 20 computers in four countries and authored by biologists from around the world. This is the best reference on the web for classifying insect orders as well as many other organisms. The site has beautiful pictures and descriptions as it places arthropods and insects in their appropriate rank in "the Tree of Life."