books.google.com - This comprehensive text is an excellent introduction to the field of public health. The book is divided into two parts. Part I defines and describes the public health system, provide concepts and tools for measuring health in populations, characterizes the relationship of the public health system with...http://books.google.com/books/about/Essentials_of_Public_Health.html?id=0Q4AtlLiIK4C&utm_source=gb-gplus-shareEssentials of Public Health
