state gov APPSC Group 4 (Pre+Mains) Mock Test 2022 General Science Biology Invention and Discoveries

अँथ्रॅक्स विरूद्ध लस कोणी शोधली?

1
एडवर्ड जेनर
2
मॉरिस हिलेमन
3
रॉबर्ट कोच
4
लुई पाश्चर
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