TY  - BOOK
AU  - LAUNHARDT W
TI  - Mathematical principles of economics. Tr by Hilda
T2  - Classics in the History of Economics
SN  - 1852787236
U1  - X:(B), N3 
PY  - 1993///
CY  - Hants
PB  - Edward Elgar         
KW  - Econometrics
ER  -