The free Bookshelf from NCBI continues to grow

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=Books

""The NCBI Bookshelf is a growing collection of biomedical books
that can be searched directly by typing a concept into the textbox above and selecting "Go".
Try one of these searches:
cell cycle control
immunodeficiency
protein evolution

Books are also linked to terms in PubMed abstracts: when viewing an abstract, select the "Books" link to see phrases within the abstract hyperlinked to book sections. ""

New on the Bookshelf:

Disease Control Priorities in Developing Countries 2nd ed.
Dean T. Jamison, Joel G. Breman, Anthony R. Measham, George Alleyne, Mariam Claeson, David B. Evans, Prabhat Jha, Anne Mills, Philip Musgrove, editors
Washington (DC): IBRD/The World Bank and Oxford University Press; 2006

Global Burden of Disease and Risk Factors
Alan D. Lopez, Colin D. Mathers, Majid Ezzati, Dean T. Jamison, Christopher J. L. Murray, editors
Washington (DC): IBRD/The World Bank and Oxford University Press; 2006

Priorities in Health
Dean T. Jamison, Joel G. Breman, Anthony R. Measham, George Alleyne, Mariam Claeson, David B. Evans, Prabhat Jha, Anne Mills, Philip Musgrove, editors
Washington (DC): IBRD/The World Bank; 2006