TY  - BOOK
AU  - Lipsey, Richard G.
AU  - Forrest, David (jt. auth)
AU  - Olsen, Wendy (jt. auth)
TI  - Workbook for the seventh edition of an introduction to positive economics
SN  - 0194424529
U1  - 330 
PY  - 1993///
CY  - Oxford
PB  - Oxford University Press
KW  - Economics
ER  -