The Oxford English Dictionary
Merriam Webster's Collegiate Dictionary
Merriam Webster's Medical Desk Dictionary
Webster's New World Medical Dictionary
An online reference library that allows users to search the content of:
Search results are accompanied by cross-referenced links connecting related entries and providing context for research.
The ProQuest Statistical Abstract of the United States has a wealth of statistical information across different subject areas.
Britannica Online Academic Edition is an online encyclopedia for general facts.
Britannica World Data Analyst Online includes "Country Snapshots," " Country Comparisons" and "Ranked Statistics" about nations around the world.