TY  - BOOK
AU  - Haycocks,H.W., Perks, W.
AU  - x
TI  - Mortality and othe investigations: x
SN  - x
U1  - 312.2/HAM 
PY  - 1955///
CY  - Cambirdge
PB  - Univ, Press
KW  - Statistics
KW  - Statistcs
N1  - x
ER  -