Rickettsia
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	Rickettsia HBF Lecture		MedBact.htm
	Baron Medical Microbiology Chapter 38		Brock 9th Ed Biology of Microorganisms
	Tortora: Microbiology An Introduction		Jacquelyn Black 4th Ed Microbiology: Principles & Explorations
			updated 23/02/01
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Rickettsial Pathogens and Their Arthropod Vectors Abdu F. Azad* and Charles B. Beard Emerging Infectious Diseases 4(2) 1998