00401n a2200169 a 4500 B B 010397 20220201175226.0 330 N5;N6;8 Lipsey, Richard G An Introduction to Positive Economics 8th Oxford ELBS ( Oxford University ) 1996 xxiv,919p. Economics G 0 0 0 0 SGGSCC SGGSCC 2020-09-22 0 330 N5;N6;8 11762 2020-09-22 00:00:00 2020-09-22 BK 10399 10399