TY  - BOOK
AU  - Raven, A.J.
AU  - Ault, S.M.
TI  - Mathematics for Everyday Life 4:  
SN  - 0-435-50786-9
U1  - 510.07 
PY  - 1971///
CY  - London
PB  - Heinemann Educational
KW  - Mathematics
ER  -