Encyclopedia of Public Health by 
International Encyclopedia of Public Health by 
Medicine, Health, and Bioethics by 
Qualitative Methods in Public Health by The Library has e-reference books (dictionaries, encyclopedias and handbooks) that can provide basic definitions or an overview on a research topic.
Try the Gale Virtual Reference Library.
It allows one to search all the content in the Gale collection. One can also click on the MEDICINE category to see what books are included in the search and liimit the search to a particular book.
Other sources of eBooks
