00456n a2200169 a 4500 B B 000372 20220201161714.0 330 K3;M3;13 ECO LIpsey, Richard G An introduction to positive economics 6th London English language Book society and Weidenfeld and Nicolson 1983,Rept1986; 1987 xxv,,790 Economics,Economics T 0 0 ddc 0 0 SGGSCC SGGSCC 2020-09-22 68.85 0 330 K3;M3;13 ECO 430 2020-09-22 00:00:00 68.85 2020-09-22 BK 372 372