TY  - BOOK
AU  - Lewis J.Parry, x
AU  - x
TI  - An introduction to mathematics . . . : x 
SN  - x   
U1  - 330.182/LEI  
PY  - 1964///
CY  - London 
PB  - Macmillan 
KW  - Mathematics
KW  - Economics
N1  - Includes
ER  -