Inventions & Discoveries: Medical Inventions (Knowledge Encyclopedia For Children)
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Inventions & Discoveries: Medical Inventions (Knowledge Encyclopedia For Children) بقلم Wonder House Books ... What causes diseases and illnesses? How did the doctors diagnose and observe patients when there were no thermometers and stethoscopes? What is a CT scan and who developed it? This Encyclopedia will answer these and more hows and whats for you.
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