History · History of Science and Invention
1820 के दशक में दुनिया की पहली स्थायी तस्वीर लेने का श्रेय किसे दिया जाता है?
- 1गेल बोर्डन
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- 3नाइसफोर नीएप्स✓
- 4रिचर्ड गैटलिंग
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नाइसफोर नीएप्स
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