Biology · Biology
मानव में रक्त समूह किस वैज्ञानिक़ द्वारा खोजा गया था?
- 1एलेक्जांडर फ्लेमिंग
- 2लुई पाश्चर
- 3रॉबर्ट कॉख
- 4कार्ल लैंडस्टीनर✓
सही उत्तर देखें
कार्ल लैंडस्टीनर
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