Biology 

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combines the National Library of Medicine's bibliographic database with links to the complete text of articles from leading medical journals.

was created by the National Science Foundation to provide organized access to high quality resources and tools that support innovations in teaching and learning at all levels of science,technology, engineering, and mathematics education.

contains over 800 full-text journals covering aeronautics, astrophysics, biology, chemistry, computer technology, geology, aviation, physics, archaeology, marine sciences and materials science.

Full text articles from 320 journals covering a broad range of science topics and subject areas such as Chemistry, Computer Databases & Software, Engineering, Environmental Science, Food Science, Genetics, Microbiology, Nutrition, and Physiology.

Multidisciplinary database, with more than 6,100 full-text periodicals, including more than 5,100 peer-reviewed journals.

3500 pages, the five-volume set covers diseases, disorders, treatments, procedures, specialties, anatomy, biology, and issues in an A-Z format. Online version includes added search and browsing capabilities.