Levels and trends of mortality since 1950 : a joint study by the United Nations and the World Health Organization. - United Nations. Dept. of International Economic and Social Affair s.; World Health Organization (New York : United Nations, Dept. of International Economic and So cial Affairs, 1982)
"ST/ESA/SER.A/74."
Includes bibliographical references.
Keywords: Mortality; Mortality -- Developing countries