TY  - BOOK
AU  - Lewis, J. Parry
TI  - Introduction to mathematics: for students of economics/2e
U1  - 500 
PY  - 1969///
CY  - London
PB  - Macmillan & Co.
KW  - Algebra
KW  - Geometry
KW  - Calculus
N1  - Include index
ER  -