TY - BOOK AU - United Nations International Economic and social affairs ED - United Nations International Economic and social affairs TI - Levels and trends of mortality since 1950 : A Joint by the United Nations and the World Health 0rganisation U1 - L:5191.1(X).N8<--N50, M2/UN PY - 1982/// CY - New York PB - United Nations KW - Medicine ER -