1. कोववड-19 के टीकाकरण अभियान को सुगम व सफल बनाने हेतु जिला सवस्थ्या अधिकारी को सुझाव पत्र लखिए।
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History is the scientific study of the past. Events occurring before the invention of writing systems are considered prehistory. "History" is an umbrella term that relates to past events as well as the memory, discovery, collection, organization, presentation, and interpretation of information about these events.
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