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Macmahon Brian, Ipsen Johannes & Pudh Thomas F. (1960). Epidemiologic methods. : .
Macmahon Brian, Ipsen Johannes and Pudh Thomas F. 1960. Epidemiologic methods. : .
Macmahon Brian, Ipsen Johannes and Pudh Thomas F. (1960). Epidemiologic methods. : .
Macmahon Brian, Ipsen Johannes and Pudh Thomas F. Epidemiologic methods. : . 1960.