Geography · Geography
पृथ्वी की ऊपरी परत के लिए 'सियाल' शब्द का सर्वप्रथम प्रयोग किसने किया?
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- 1डी. मंडलम
- 2सी. प्रणोदक
- 3बी. होल्म्स ने✓
- 4ऐ. कॉर्निया का
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बी. होल्म्स ने
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