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: Invention
नैदानिक (डाइग्नोस्टिक) अल्ट्रासाउंड की खोज किसने की? , Who invented diagnostic ultrasound?
Who invented diagnostic ultrasound?
A.
Alexander Fleming
अलेक्जेंडर फ्लेमिंग
B.
Ian Donald
इयान डोनाल्ड
C.
A .laveron
ए. लैवेरन
D.
Robert Koch
रॉबर्ट कोच
Solution
B. Ian Donald
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