TY  - BOOK
AU  - Ball, M. A.
TI  - Mathematics in the social and life sciences: ; theories, models and methods 
T2  - Ellis Horwood series in Mathematics and its applications
SN  - 0470201916
U1  - 330.0151 
PY  - 1985///
CY  - New York
PB  - John Wiley
ER  -