00455pamaa2200169 4500 0000016205 20080131090000.0 0198774249 330 LIP 1995 HB171.5 LIP 1995 Lipsey An introduction to positive economics Richard G.Lipsey and K.Alec Chrystal.. 8th ed. Oxford: OUP, 1995. xxiv, 919p.; 26 cm. Economics CHRYSTAL, K. Alec