TY  - BOOK
AU  -  Dublin, Louis I 
AU  - Lotka, Alfred J and Spiegelman, Mortimer
TI  - Length of Life: a study of the life table 
U1  - 312 DUB 
PY  - 1949///
CY  - New York
PB  - The Ronald Press Company
KW  - Length of life
ER  -