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All About Great Medical Discoveries by
David Dietz, Published by: Random House, New York, 1960 |
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Eyewitness Books: Medicine by Steve
Parker, Published by: Dorling Kindersley, London, 1995 |
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website:
www.seps.org |
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website: www.encarta.msn.co |
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Encarta '99 CD ROM |
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