Books @ OVID
Full-text of selected nursing, drug, primary care medicine, laboratory and diagnostic tests, and natural products sources.

The BookShelf
The National Library of Medicine's BookShelf is a growing collection of searchable electronic biomedical books.

Free Books4Doctors!
Gateway to free, online, full-text medical books. Access is organized by medical specialty, title, or language.

Gale Virtual Reference Library
Encyclopedias, almanacs, reference series and more. Provides comprehensive overview of varied topics from numerous subject areas, all in eBook format.

The Merck Manuals
The following Merck manuals are available online:

- The Merck manual of medical information (second home edition)
- The Merck manual of diagnosis and therapy
- The Merck manual of geriatrics
- The Merck manual of health and aging