TY  - BOOK
AU  - Benjamin B.
TI  - Elements of vital statistics
U1  - 519 BEN  
PY  - 1959///.
CY  - London : 
PB  - George Allen and Unwin Ltd, 
KW  - Hospital statistics
KW  - Mental health statistics
KW  - Vital statistics
N1  - Includes index.
ER  -