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Continue to ChatSample design and allocation for random digit dialling - https://avesis.metu.edu.tr/yayin/682b1e8e-aad8-4674-a729-07b05fe4b2e1/sample-design-and-allocation-for-random-digit-dialling
Sample design and allocation for random digit dialling - https://avesis.metu.edu.tr/yayin/682b1e8e-aad8-4674-a729-07b05fe4b2e1/sample-design-and-allocation-for-random-digit-dialling