General Science · Scientific Discoveries
पहले सफल पोलियो टीके की खोज किसने की थी?
- 1अलेक्जेंडर फ्लेमिंग
- 2एडवर्ड जेनर
- 3जोनास साल्क✓
- 4लुई पास्चर
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जोनास साल्क
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