TY - BOOK AU - Lipsey,Richard G. TI - An introduction to positive economics SN - 0297782665 AV - HB171.5 .L56 1983 PY - 1983///] CY - London PB - Weidenfeld and Nicolson KW - Economics N1 - Based on lectures given by the author at the London School of Economics in October, 1961; Errata slip inserted; Issued with various printing dates; Bibliographical footnotes ER -