00320n a2200145 a 4500 B B 000247 20220201161614.0 340 L2 LAW Hart, H.L.A. The concept of Law London Oxford University Press 1972 x,263p. T 0 0 ddc 0 0 SGGSCC SGGSCC 2020-09-22 15.80 0 340 L2 LAW 304 2020-09-22 00:00:00 15.80 2020-09-22 BK 247 247