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Disease Prevention

Alexandra Powe Allred

出版	Perfection Learning Corporation, 2004
主題	Health & Fitness / GeneralHealth & Fitness / Diseases & Conditions / General
ISBN	07569447679780756944766
URL	http://books.google.com.hk/books?id=9yKuAAAACAAJ&hl=&source=gbs_api

註釋

Early doctors had to guess what was wrong with their patients, but today doctors know that there are three things that cause the spread of diseases--heredity, personal hygiene, and the environment.