Raz, Joseph. The concept of a legal system : an introduction to the theory of legal system / Joseph Raz. - Oxford : Clarendon Press, 1970. - viii, 212 p. : ill. ; 23 cm. Based on thesis, Oxford University. Includes bibliographical references (p. [209]-210) ISBN: 0198251890 Subjects--Topical Terms: Jurisprudence. Dewey Class. No.: 340.1