Research Databases: W

Ohio tree identification guide.

Ohio snake identification guide.

Identifying flint artifacts.

Thousands of colorful illustrations, diagrams, and maps enrich thousands of articles, with teacher guides.

Information resources for pre-school through college.

Contains an extensive multimedia collection, including editor-selected websites, and correlations to state standards.

Timelines covering many subjects. Includes features to build and share your own timelines. Use your own events and images or add content and images from World Book.

The world's most comprehensive bibliography with 40 million bibliographic records representing 400 languages. Covers information back to the 11th Century. Includes holdings information from the world's libraries.