Stilwell, J. 1941- Workbook to accompany An introduction to positive economics / J.A. Stilwell and Richard G. Lipsey. - 2nd edi. - London : Weidenfeld and Nicolson, 1971 - 271 p. : ill. ; 30 cm. ISBN: 0297993577 Subjects--Topical Terms: Economics. Dewey Class. No.: 330 / STW 1971