TY - BOOK AU - Richard G Lipsey AU - Rosemary Clarke AU - J Stilwell TI - Workbook to Accompany the Fourth Edition of An Introduction to Positive Economics AV - HB171.5 .S75 1975 PY - 1975/// CY - London : , PB - Weidenfeld and Nicolson KW - J Stilwell; KW - Economics ER -