سموگ کی شدت بتانے والا ائیر کوالٹی انڈکیس (اے کیو آئی) کیسے کام کرتا ہے؟
What is air quality index and how to measure air pollution - Aaj News
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Ducky bhai kay Jail main 100 Din! EP #11 - News Headquarter - NHQ
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