Age and sex patterns of mortality model life-tables for under-developed countries.

Manylion Llyfryddiaeth
Awdur Corfforaethol: United Nations. Department of Economic and Social Affairs. Population Branch
Fformat: Llyfr
Iaith:English
Cyhoeddwyd: New York United Nations, Dept. of Social Affairs, Population Branch 1955.
Cyfres:Its population studies no. 22
Pynciau: